Sunrise over Bali rice fields with Mount Agung in the background

Credit: Alexander Grabchilev from stock.adobe.com

"Bali has a tropical climate with year-round heat and humidity, and a distinct Wet Season (November-April) and Dry Season (May-October)." 

Bali has a tropical climate, with hot and humid weather all year round. Throughout the year, the temperature in Bali stays between 20°C and 32°C, and the humidity remains consistently above 75%. 

Bali has a distinct wet season and dry season, which determines what what kind of weather to expect. In the dry season, from May to October, the weather in Bali tends to be clear and sunny, with cooler temperatures and less rainfall. In the wet season, from November to April, the weather is often muggy and it rains a lot due to the monsoon wind pattern. 

Bali's weather and seasonality are further influenced by weather patterns like La Niña and El Niño. These meterological phenomena affect ocean temperatures and atmospheric conditions, which affect how long the wet and dry seasons last.  

The majority of rainfall occurs in the wet season. January is the rainiest month in Bali, with an average rainfall of around 350 mm. August is the driest month, in Bali with an average rainfall of 15-40mm. 

Bali receives 6-12 hours of sunshine per day on average across the year. There are more sunshine hours in the dry season than the wet season. 

The ocean temperature usually remains between 26 – 30°C, making Bali an ideal location for water activities such as swimming, snorkelling, surfing and diving.   

Understanding Bali’s Weather and Climate ensures you make the most of your visit. Whilst some weather factors like temperature and humidity remain fairly stable throughout the year, other factors like rainfall and sunshine vary a lot throughout the year. This is why it's best to consider Bali's weather by month when planning a trip. 

Additionally, Bali's climate has been slowly changing over time, as a result of large-scale climate factors like climate change. Bali's average temperature has risen by about 0.2 – 0.3°C per decade since the 1970s, according to data from the Indonesian Meteorology, Climatology and Geophysics Agency (BMKG). 

In this guide, we explain the main climate factors which influence Bali's weather, as well as the most important figures that relate to Bali's weather. We also provide helpful advice around planning a trip to Bali with weather in mind. Let's get started! 

Graph of Bali monthly weather overview, including temperature and rain

Bali Weather and Climate

Bali's climate is tropical, due to its position 8 degrees south of the equator and proximity to the Indian Ocean. This results in year-round warm temperatures of 20-32°C, and humidity above 75%. Bali experiences two distinct seasons: the Wet Season (November-April) which brings monsoon rains, and the Dry Season (May-October) which is cooler and less humid. 

Officially, Bali's tropical climate is known as a "tropical wet and dry climate" or "tropical monsoon climate", according to official Köppen classification. This classification refers to the the fact that Bali's climate is divided into distinct wet and dry seasons, with the majority of rainfall occurring in the summer months. 

What is the Temperature in Bali?

Given its location close to the equator, Bali remains warm all year round, with daily temperatures of between 20°C and 32°C, and six to twelve sunshine hours per day. The ocean temperature usually remains between 26 – 30°C, making Bali an ideal location for water activities such as swimming, snorkelling, surfing and diving.

What are the Sunshine Hours in Bali?

On average across the year, Bali experiences six to twelve sunshine hours per day. Bali receives 8-10 hours of sunshine per day in the dry season, and 6-8 hours of sunshine per day in the wet season.

What is the Humidity in Bali?

The average humidity in Bali is high, usually sitting between 77 – 85%. The combination of high humidity and warm temperatures make the weather on the island generally pleasant, though at times the weather can be stiflingly, hot and muggy. For this reason, high impact activities like hiking are best attempted in the drier months.

What is the Rainfall in Bali?

Rainfall is a significant climate variable in Bali, with the bulk of rainfall occurring in the wet season between November and April. Over the course of the year, the monthly average rainfall is 234 – 287 mm. January is typically the wettest month in Bali, with an average rainfall of around 350 mm, according to global data from the World Bank’s Climate Knowledge Portal. Conversely, it's cooler and slightly less humid in the dry season – with mostly rain-free days. August is the driest month overall with only 15 – 40 mm of rain. For a typical beach holiday, it’s recommended to plan a trip during the peak dry season months of June to September, when the weather is sunniest and clearest. For those who want to see Bali’s rainforests and rice fields at their most lush, or experience a yoga or wellness retreat, the wet season is an excellent time to visit.

Climate variability

Bali’s climate is subject to other variables such as large-scale weather patterns and long-term shifts in weather caused by climate change. Examples of weather patterns which affect Bali’s weather include La Niña, which causes increased rainfall in Bali, and El Niño, which causes increased dryness. These patterns can cause the wet or dry season to begin earlier, and to last longer, than usual. Bali has recently come out of an unusual three year La Niña period (called a ‘triple dip’ La Niña), and is predicted to have a 50% chance of entering El Niño this year. Additionally, climate change has meant that the temperature in Bali has increased by a fraction of a degree each decade since 1970, according to the Indonesian Meteorology, Climatology and Geophysics Agency (BMKG).

Extreme weather events

It is important to note that Bali experiences occasional extreme weather events such as tropical storms and cyclones, especially during the wet season. While these events are not common, they have the potential to cause significant damage to the island's infrastructure and affect travel plans. It is advisable to check weather reports and take necessary precautions in case of extreme weather events.

For more details on annual figures for temperature, humidity, sunshine, rainfall and more – skip to our annual figures section.

For information for your specific period of travel, skip to Bali weather by month.

What are Bali Seasons?

Bali has two distinct seasons: a Wet Season (November-April), which has higher annual rainfall, and a Dry Season (May-October), when it's typically clear and sunny.  In 2023, Bali's dry season extends to October due to El Niño. El Niño is a weather pattern that causes prolonged hot and dry weather. 

The Wet Season in Bali lasts from November-April, and the Dry Season lasts from May-October, according to expert opinion from international climatologists at the Bureau of Meterology (BOM). Some sources state slightly different timeframes for the seasons, stating for example that the dry season starts in April or that the wet season ends in March, but this information is now outdated.  It's essential to rely on the most recent and accurate climatological data provided by trusted sources like the Bureau of Meteorology for up-to-date information on Bali's weather patterns.

The duration of the wet and dry seasons in Bali are influenced by the climate phenomenon known as the El Niño-Southern Oscillation (ENSO). ENSO refers to a weather pattern with three main phases:  El Niño, La Niña, and Neutral (EN). Depending on which phase is active, ENSO causes fluctuations in climate factors like ocean temperatures, which directly impact the seasonality experienced in places like Bali.

In the last few years Bali had been experiencing longer and wetter rainy seasons due to La Niña, which caused cooler ocean temperatures in the Pacific Ocean and higher rainfall in the region as a result. As of 2022, Bali had experienced three years of La Niña in a row, which is known as a 'triple-dip' La Niña.

As of 2023, Bali has changed from a La Niña phase to an El Niño phase. El Niño causes the opposite effects to La Niña, instead warming the oceans and causing temperatures to rise. Due to El Niño, Bali is predicted to experience an extended dry season. This  El Niño phase brings heightened risk of drought and bushfire, according to Indonesia's Disaster Agency the Badan Nasional Penanggulangan Bencana (BNPB). 

Below is more information on each of Bali's seasons. 

Wet Season (November – April)

A wet season (commonly referred to as a “rainy” season) is an annual period of higher rainfall. Bali’s wet season (commonly referred to as the “rainy season” or “monsoon season”) usually falls between November and April, according to the Australian Bureau of Meteorology. During Bali's wet season, Bali's weather tends to be hot and humid, with daily temperatures of between 22 – 32°C and average monthly of rainfall 234 – 287 mm. Rain is inconsistent, ranging from light drizzle to heavy downpours – with January being the wettest month in Bali overall. The wet season is perfect for exploring Bali’s lush jungles and rice fields, indulging at a local spa, visiting museums, temples and markets, or doing a yoga retreat

Heavy rainfall at a temple in Bali by Aditya Nara

Credit: Aditya Nara from Unsplash

Dry Season (May – October)

A dry season refers to a yearly period of minimal rainfall, when there is lower rainfall, more sunshine and clearer skies. Due to its location in the tropic, Bali experiences a dry season which is not as distinct as in other places like Northern Australia, according to Dr Andrew Watkins from the Bureau of Meteorology.  This year, Bali's dry season falls between May and October. Temperatures during the dry season sit comfortably between 20 – 31°C and the average monthly rainfall is only 57 – 85 mm. Humidity is slightly lower, making it feel cooler compared to the wet season. The dry season is ideal for outdoor activities like visiting beaches, snorkelling, scuba diving, sightseeing and hiking.

Blue skies and sunshine while enjoying peace and quiet on the beach in Nusa Dua, Bali by jarrad horne

Credit: jarrad horne from Unsplash

Bali Weather by Month

Bali's monthly weather varies throughout the year according to the seasons. Some weather factors, like temperature and humidity, stay relatively stable regardless of the time of year, which is why it's one of the most popular tropical holiday destinations. Other factors, like rainfall and sunshine, vary significantly according to the seasons experienced in any given month. 

Below is a top level summary of Bali's weather by month:

  • Hottest Month: July is typically the hottest month in Bali, with daily temperatures ranging between 20°C and 29°C, making it ideal for beach activities, water sports, and outdoor adventures.
  • Rainiest Month: January is the wettest month in Bali, with frequent but brief tropical showers. It receives an average of 20-27 days of rain and around 342-350mm of rainfall.
  • Most Humid Month: January is the most humid month in Bali, with humidity levels ranging from 82% to 85%.
  • Sunniest Month Bali is usually most sunny in July,  with an average of 8 to 10 hours of sunshine per day

The below figures explain Bali's Weather in greater detail, broken down on a month-by-month basis.

What is Bali's Weather in January?

January is usually Bali’s wettest month with hot, muggy days, which typically range between 22 – 31°C. Tropical showers are frequent but brief, allowing you to still enjoy an average of five to six hours of sunshine per day. This weather is perfect for visiting Bali’s temples, rice fields and markets – just be sure to bring your umbrella or poncho.

Though January falls in the peak of the rainy season, it’s also the low season for tourists, meaning fewer crowds and deals for cheap flights and accommodation. Bali is a year-round destination, so the weather in January shouldn’t stop you enjoying tropical activities like diving and swimming between showers.

Bali January weather overview (averages)

Maximum temperature:
30 - 31°C
Minimum temperature:
22 - 25°C
Monthly rainfall:
342 - 350mm
Days of rain:
20 - 27
Sunshine hours per day:
5 - 6
Humidity:
82 - 85%
Wind speed:
13km/h
Sea temperature:
29°C

 

What to wear: Light, breathable layers in quick-dry material.
What to pack: Poncho, a good book.
What to do: Museums, temples, markets, shopping.
Key January events: Galungan and Kuningan, Chinese New Year, Saraswati Puja

 

What is Bali's Weather in February?

February in Bali is mostly wet, hot and humid, with daily temperatures ranging between 22°C and 31°C. Despite an average of 18 – 19 days of rainfall in February, the tropical showers are brief and typically fall in the afternoon and evening. February is a great month to explore Bali’s food and restaurant scene and visit the lush jungles and rice fields on sunny days.

Plan a visit to Bali in February if you want to take advantage of the off-season low prices and discounts on hotels, villas and resorts. Although February falls in Bali’s wet season, you’ll still enjoy frequent sunshine, warm days and plenty of opportunity to explore Bali’s culture without the crowds.

Bali February weather overview (averages)

Maximum temperature:
30 - 31°C
Minimum temperature:
22 - 25°C
Monthly rainfall:
280 - 331mm
Days of rain:
18 - 19
Sunshine hours per day:
6
Humidity:
81- 85%
Wind speed:
12km/h
Sea temperature:
29°C

 

What to wear: Cotton clothing and closed shoes.
What to pack: Rain jacket, mosquito repellent.
What to do: Cooking classes, dining out, nightlife, spa and massage.
Key February events: Anniversary of Denpasar

 

What is Bali's Weather in March?

March in Bali is typically hot and humid, with the chance of brief and intense rain showers in the afternoons and evenings. Daytime temperatures fall between 22 – 31`°C with an average of 20 days of rainfall and high humidity (81 – 85%).

March is a great time to enjoy Bali’s beach bars, the Waterbom park and water sports, which will bring a cool relief on hot, muggy days. Visitors should also head to Ubud and the nearby rice terraces and waterfalls in March, which are at their best at the tail-end of the wet season.

With increasing sunshine, brief showers and hot weather, you’ll be able to enjoy a variety of Bali’s outdoor activities in March. It’s typically less crowded in the lead up to the peak April period, making it a good time to take advantage of shorter queues at temples and discount rates on hotels, resorts, and villas.

Bali March weather overview (averages)

Maximum temperature:
30 - 31°C
Minimum temperature:
22 - 25°C
Monthly rainfall:
215 - 270mm
Days of rain:
14 - 20
Sunshine hours per day:
7
Humidity:
81 - 85%
Wind speed:
9km/h
Sea temperature:
30°C

 

What to wear: Summer clothes and swimmers.
What to pack: Poncho, insect repellent, quick-dry beach towel.
What to do: Rice terraces, waterfalls, swimming, surfing at Nusa Dua.
Key March events: Nyepi, Silence Day, Joyland Festival.

 

What is Bali's Weather in April?

April is the last month of Bali’s wet season, with hot weather, increasing sunshine and a reduced chance of rain. Temperatures range between 22 – 31°C, with an average of 80% humidity. April’s rainfall tends to fall over 12 – 14 days in the month, usually in short bursts with periods of sunshine in between.

April is generally considered a great time to visit Bali as fewer rainy days and hot temperatures create ideal conditions for swimming, surfing, snorkelling, diving and hiking. Popular tourist spots in April include the rice fields and waterfalls, which have flourished in the wet season.

The Australian April school holidays and Easter period are typically the busiest times to visit Bali, so book outside of these peak periods to avoid crowds, find available accommodation, and get cheaper deals on flights and room rates. Families travelling during the school holidays and Easter break will have plenty to do in Bali, but it’s recommended to book your flights and activities in advance.

Bali April weather overview (averages)

Maximum temperature:
30 - 31°C
Minimum temperature:
22 - 25°C
Monthly rainfall:
90 - 166mm
Days of rain:
12 - 14
Sunshine hours per day:
8
Humidity:
80 - 81%
Wind speed:
9km/h
Sea temperature:
29 - 30°C

 

What to wear: Shorts, T-shirts, summer dresses.
What to pack: Walking shoes, swimmers, sunscreen.
What to do: Hiking, snorkelling, swimming.
Key April events: Purnama Kedasa, Idul Fitri Festival

 

What is Bali's Weather in May?

May is widely considered one of the best months to visit Bali for the dry, hot and sunny weather, fewer crowds, and cheaper prices.

May in Bali is generally hot, with temperatures ranging between 21 – 31°C and an average of eight to nine days of rainfall expected. Rain showers tend to be light and brief, and can bring relief on humid, muggy days.

May falls just after the peak April holiday season, so there are fewer crowds and a greater chance to get cheaper flights and discounted room rates, especially at luxury resorts. There are also shorter queues and less people around when visiting Bali’s main attractions, including Lempuyang Temple and Tanah Lot.

Extended periods of sunshine and warmth, and clear ocean water in May make it an ideal month to visit Bali for swimming, snorkelling, diving, and hiking. Popular snorkelling and diving hotspots like Nusa Penida will also be less crowded in May.

Bali May weather overview (averages)

Maximum temperature:
30 - 31°C
Minimum temperature:
21 - 24°C
Monthly rainfall:
75 - 114mm
Days of rain:
8 - 9
Sunshine hours per day:
9
Humidity:
80%
Wind speed:
10km/h
Sea temperature:
28 - 29°C

 

What to wear: Short sleeves and light materials.
What to pack: Snorkel gear, durable shoes.
What to do: Diving, beach hopping, temples.
Key May events: Waisak Day, Bali Spirit Festival, Suara Festival.

 

What is Bali's Weather in June?

June in Bali has almost-perfect weather that’s hot, sunny and mostly clear. Average temperatures range between 21 – 30°C, usually with around six or seven days of rainfall, and humidity averaging 79 – 80%.

As is typical of Bali’s dry season, there is a low chance of rainfall in June, with showers generally occurring later in the afternoon and in the evening for a brief period.

To avoid crowds, plan to visit in the earlier part of the month as there are generally less visitors and local tourist attractions, restaurants, beach clubs, and bars will be less busy.

Mostly clear days, long hours of sunshine, minimal rainfall and warm sea temperatures make June a great time to visit for swimming at Kuta Beach, surfing at Uluwatu, or diving and snorkelling at Nusa Lembongan. It’s also a popular time for hiking Mount Batur, where the weather is cooler than the coast.

Many consider June to be one of the best months to visit Bali as it’s just before the busy peak holiday season, and the weather is almost perfect.

Bali June weather overview (averages)

Maximum temperature:
30°C
Minimum temperature:
21 - 24°C
Monthly rainfall:
70 - 79mm
Days of rain:
6 - 7
Sunshine hours per day:
8 - 10
Humidity:
79 - 80%
Wind speed:
12km/h
Sea temperature:
28°C

 

What to wear: Lightweight cotton clothing.
What to pack: Hiking shoes, swimwear, sandals.
What to do: Hiking, swimming, snorkelling.
Key June events: Bali Arts Festival, Ubud Food Festival.

 

What is Bali's Weather in July?

July is typically the best weather month to travel to Bali for its hot sunny days, minimal chance of rain, and relatively low humidity. Daily temperatures range between 20 – 29°C, and there’s an average of four to five days of rainfall in the month. Bali has a tropical climate and there is always a chance of rain, but in July showers tend to be light and brief and won’t ruin a day of outdoor activities.

July is a popular month to visit Bali for the ideal weather conditions and because it coincides with Australian winter school holidays and European summer holidays. It is often crowded and expensive during July, so it’s recommended to book your flights to Bali and accommodation in advance to secure the best possible prices. It’s also best to arrive at popular tourist attractions like temples and water parks early.

With its clear, sunny days, Bali’s July weather is perfect for popular activities including swimming, island hopping, snorkelling, water sports and sunrise hikes. It's a vibrant time for Bali’s nightlife, with busy beach bars, clubs and live venues.

Bali July weather overview (averages)

Maximum temperature:
29°C
Minimum temperature:
20 - 24°C
Monthly rainfall:
50 - 77mm
Days of rain:
4 - 5
Sunshine hours per day:
8 - 10
Humidity:
78 - 80%
Wind speed:
13km/h
Sea temperature:
27°C

 

What to wear: Casual beach clothing.
What to pack: Sunscreen, hat.
What to do: Island hopping, waterpark, nightlife, kite surfing
Key July events: Bali Arts Festival, Ubud Food Festival, Bali Kite Festival

 

What is Bali's Weather in August?

August in Bali is mostly hot, sunny, and pleasant. Daily temperatures range between 20 – 29°C, and an average of three days of rain is expected during the month.

August is considered a great time to visit Bali for a beach holiday or to surf, dive and snorkel as the water is warm and clear, and the days are mostly sunny. Rainfall during August tends to be spontaneous and light, and generally won’t interfere with your day’s activities.

Visit Bali’s famous waterfalls to cool off from the dry season sunshine and heat or take advantage of the low chance of rain for the volcano hike up Mount Batur.

August is often one of Bali’s busiest months as Australians escape winter and Europeans and Americans travel for their summer break. August is usually crowded, and flights and accommodation are often more expensive and harder to book. It’s recommended to book flights and rooms in advance to secure the best deals and rates.

Avoid the crowds in Bali in August by venturing further north to areas like Munduk or Amed Beach.

Bali August weather overview (averages)

Maximum temperature:
29°C
Minimum temperature:
20 - 23°C
Monthly rainfall:
15 - 40mm
Days of rain:
3
Sunshine hours per day:
8 - 10
Humidity:
77 - 80%
Wind speed:
13km/h
Sea temperature:
26 - 27°C

 

What to wear: Light, loose clothing.
What to pack: Swimwear, walking shoes.
What to do: Surfing, diving, snorkelling, waterfalls, volcano hikes.
Key August events: Sanur Village Festival, Ubud Village Jazz Festival, Galungan and Kuningan.

 

What is Bali's Weather in September?

September in Bali is generally warm, pleasant and sunny, with occasional rain showers. Average daily temperatures fall between 20°C and 30°C and roughly three days of rain are expected in the month.

September is a great time for Bali’s outdoor activities and attractions, and watersports like jet skiing, kite surfing or parasailing. Plan a visit to Bali in September to avoid the crowds of the peak holiday period of July – August and experience Bali’s beaches, temples, diving spots, restaurants and bars with fewer people.

Bali September weather overview (averages)

Maximum temperature:
30°C
Minimum temperature:
20 - 24°C
Monthly rainfall:
40 - 57mm
Days of rain:
3
Sunshine hours per day:
8 - 9
Humidity:
78 - 80%
Wind speed:
11km/h
Sea temperature:
27°C

 

What to wear: Casual beachwear.
What to pack: Modest clothing for temple visits, beach attire.
What to do: Swimming, water sports, temples.
Key September events: Bali Coffee Festival, Bali Interfood Expo

 

What is Bali's Weather in October?

October in Bali is typically warm, with mostly clear skies and long sunny days. October is the last month in Bali’s official dry season, with daily temperatures between 21 – 31°C and an expected average of six days of rain in the month. Rainfall tends to be light and brief, and usually falls in the afternoon or evening. Rainfall starts to increase in October as the wet season approaches, with a higher chance of rainfall towards the end of the month.

October is a great time to visit Bali for outdoor and water-based activities like diving in Nusa Penida to see the Mola Mola and Manta Rays. A trip to the Tegallalang rice terraces is also popular in October as the crops are ripe for harvest.

October is considered an excellent time to visit Bali as it’s less crowded, flights and accommodation tend to be cheaper, and the weather is mostly clear, sunny and hot to enjoy Bali’s outdoor activities and attractions.

Bali October weather overview (averages)

Maximum temperature:
31°C
Minimum temperature:
21 - 24°C
Monthly rainfall:
90 - 143mm
Days of rain:
6
Sunshine hours per day:
8 - 9
Humidity:
79 - 80%
Wind speed:
9km/h
Sea temperature:
27 - 28°C

 

What to wear: Lightweight beach clothes.
What to pack: Sandals, closed walked shoes, sun hat.
What to do: Diving at Nusa Penida, Tegallalang rice fields, swimming.
Key October events: Ubud Writers & Readers Festival, Kuta Karnival

 

What is Bali's Weather in November?

November in Bali is typically hot and muggy, with an increased chance of showers and thunderstorms as it’s the first month of Bali’s wet season. Average daily temperatures fall between 22°C and 31°C and the humidity spikes up to 85%, compared to October. Ocean temperatures are usually a warm 28 – 30°C, making it a great time to swim and cool off between sporadic rain showers.

November is a great time to visit Seminyak for quick access to the beach when the rain clears and to take refuge at the local spas, yoga studios, cooking schools, restaurants, and shops on a rainy day.

Visitors travelling on a budget looking for cheap flights and accommodation or wanting to experience Bali when it’s less crowded should book for November during Bali’s off-season.

Bali November weather overview (averages)

Maximum temperature:
31 - 32°C
Minimum temperature:
22 - 25°C
Monthly rainfall:
188 - 290mm
Days of rain:
10 - 13
Sunshine hours per day:
7 - 8
Humidity:
80 - 85%
Wind speed:
8km/h
Sea temperature:
28 - 30°C

 

What to wear: Lightweight, breathable clothes, sandals with a good grip.
What to pack: Poncho, closed shoes.
What to do: Seminyak for beaches, shopping, spas and yoga.
Key November events: Pemuteran Bay Festival.

 

What is Bali's Weather in December?

Bali in December is typically hot, humid, and rainy. As one of Bali’s rainiest months, it has an average of 16-17 days of rain, ranging from brief showers to all-day downpours. Daily temperatures usually stay between 22°C and 31°C. Despite the high chance of rain, there is plenty of opportunity to enjoy periods of sunshine in December and explore Bali’s culture, with 5-6 sunshine hours per day.

Those looking to swim at the beach or for family-friendly resorts should head to Nusa Dua where the water is still calm and clear in the wet season. Popular rainy-day activities in Bali include market shopping, cooking classes, yoga classes and exploring Bali’s rich culture.

December is typically one of Bali’s busiest months and demand is high, so visiting during this time – particularly the busy hotspots of Seminyak and Canggu – requires bookings for events, flights and accommodation well in advance.

Bali December weather overview (averages)

Maximum temperature:
30 - 31°C
Minimum temperature:
22 - 25°C
Monthly rainfall:
290 - 313mm
Days of rain:
16 - 17
Sunshine hours per day:
5 - 7
Humidity:
81 - 85%
Wind speed:
11km/h
Sea temperature:
29 - 30°C

 

What to wear: Casual clothes in quick-dry fabrics.
What to pack: Rain jacket, a good book
What to do: Nusa Dua resorts, Bali nightlife, markets, temples.
Key December events: New Year’s Eve

* The above information reflects averages based on historical data, and actual weather conditions in Bali may vary.

 

Bali Weather: Annual Climate Figures

What is the Annual Rainfall in Bali?

Bali has a high annual rainfall, with an average yearly precipitation of 1,700 – 2,300 mm. Rainfall occurs throughout the year but is most intense during the wet season, which typically spans from November to April. During this time, the island can experience heavy rains as a result of the summer monsoon – which sometimes leads to flooding and landslides in certain areas. Whilst the rainiest months are typically December to March, January is the wettest month in Bali overall, receiving about 330-350 mm of rainfall across 20 – 27 days of rain on average. The amount of rainfall varies by region, with the northern and eastern parts of Bali receiving more rainfall than the south and west. When visiting Bali, it's important to be aware of the weather conditions and pack appropriate clothing and gear for potential rain.

The following graph and table shows the average monthly precipitation in Bali.

Bar graph of average monthly rainfall in Bali

Annual Precipitation Data for Bali 

  J F M A M J J A S O N D
Min avg (mm)
342 280 215 90 75 70 50 15 40 90 188 290
Max avg (mm)
350 331 270 166 114 79 77 40 57 143 290 313

 

The following graph and table shows the average number of rain days for each month in Bali:

Bar graph of average monthly days of rain in Bali

 

Rain Days Data for Bali 

  J F M A M J J A S O N D
Min avg
20 18 14 12 8 6 4 3 3 8 10 16
Max avg
27 19 20 14 9 7 5 3 3 9 13 17

 

What is the Annual Temperature in Bali?

Bali has a tropical climate with warm temperatures year-round, typically ranging between 20 – 32°C. Whilst the average temperature on the island is around 26 – 28°C, according to most climate sources. The temperature can vary by region, with the coastal areas generally being warmer and more humid than the central and mountainous regions due to differences in elevation. Bali's hottest month is usually October or November, with an average daily maximum temperature of 31 – 32°C. The coolest month in Bali is usually July or August, with an average daily minimum temperature of 20°C. The highest temperature ever recorded in Bali is 40°C, while the lowest ever recorded is 18°C. Travellers should take into account the temperature when planning their activities, as well as packing appropriate clothing and sunscreen to protect against the sun's rays.

The following graph and table shows the average minimum and maximum temperatures throughout the year in Bali:

Bar graph of average monthly minimum and maximum temperatures in Bali

Annual Temperature Data

  J F M A M J J A S O N D
Min avg (°C)
22 - 25 22 - 25 22 - 25 22 - 25 21 - 24 21 - 24 20 - 24 20 - 23 20 - 24 21 - 24 22 - 25 22 - 25
Max avg (°C)
30 - 31 30 - 31 30 - 31 30 - 31 30 - 31 30 29 29 30 31 31 - 32 30 - 31

What are the Annual Sunshine Hours in Bali?

Bali is famous for its sunny weather, with an average of eight hours of sunshine per day across the year. However, the length of sunshine hours varies depending on the time of year and location. The sunniest period in Bali roughly corresponds with the dry season (May to October), when Bali receives around 8 – 10 hours of sunshine per day. In the wet season (November to April), there is more rain and cloud cover, meaning Bali receives around 6 – 8 hours of sunshine per day. The sunniest months in Bali are June, July and August – when there is the least rain and skies are generally clear. The least sunny months are December and January, when there is usually high rainfall and a lot of cloud cover.

Coastal areas receive more sunshine than mountainous regions. Visitors to Bali can expect plenty of sunshine year-round, but it's always a good idea to check the weather forecast before planning outdoor activities.

The following graph and table shows the average number of sunshine hours for each month in Bali:

Bar graph of average sunshine hours each month in Bali

Sunshine Hours Data

  J F M A M J J A S O N D
Min avg 
5 6 7 8 9 8 8 8 8 8 7 5
Max avg
6 6 7 8 9 10 10 10 9 9 8 7

What is the Annual Humidity in Bali?

Bali experiences high humidity all year-round, with an average humidity level of around 77 – 85%. The wet season (November to April) tends to experience slightly higher humidity, which makes hot days feel sticky and muggy. The dry season (May to October) is usually more comfortable, as humidity goes as low as 77% and it’s slightly cooler.

The following graph shows the average monthly humidity in Bali:

Bar graph of average monthly humidity in Bali

Annual Humidity Data 

  J F M A M J J A S O N D
Min avg (°C)
82 81 81 80 80 79 78 77 78 79 80 81
Max avg (°C)
85 85 85 81 80 80 80 80 80 80 85 85

What are the Sea Temperatures in Bali?

Bali's ocean temperatures are warm all year-round, staying in a comfortable range of 26 – 30°C – which is great news if swimming, snorkelling, surfing and diving. Whilst the average water temperature year-round is 28°C, in the dry season this can dip slightly – the coolest temperature tends to be 26°C, typically in August.

The sea temperature tends to be slightly cooler around Bali’s north coast and around the eastern islands, such as Nusa Penida, Nusa Lembongan and the Gili Islands.

While the sea temperature is warm during Bali's wet season (November to April), it’s important to note that the wind, ocean currents and rain may make water conditions unpleasant or unsafe for swimming or water sports, so it’s best to check the conditions before going out into the water. The rain and currents may also impact visibility for snorkelling and diving.

The following graph and table shows the average monthly sea temperature in Bali:

Bar graph of average monthly sea temperature in Bali

Sea Temperature Data 

  J F M A M J J A S O N D
Min avg (°C)
29 29 30 29 28 28 27 26 27 27 28 29
Max avg (°C)
29 29 30 30 29 28 27 27 27 28 30 30

What is the Air Quality in Bali?

Bali's air quality is impacted by a range of weather-related factors, including volcanic activity, forest fires, and atmospheric circulation patterns. During the dry season (May to October), forest fires and agricultural burning can cause haze and poor air quality, particularly in the southern part of the island. According to data from the Indonesian Ministry of Environment and Forestry, the number of forest fires in Indonesia, including Bali, has been increasing in recent years due to a combination of weather factors and human activities such as land clearing.

In addition to forest fires, Bali's active volcanoes can release sulfur dioxide and other pollutants into the air. According to the Volcanic Ash Advisory Centre (VAAC), volcanic eruptions from Bali's Mount Agung in 2017 and 2018 caused widespread flight cancellations and disruptions due to concerns about ash plumes affecting visibility and air quality.

Furthermore, atmospheric circulation patterns can also impact air quality in Bali. For example, during the wet season (November-April), onshore winds from the northeast can bring clean air from the ocean, improving air quality. However, during the dry season (May-October), winds from the southwest can bring polluted air from Java and other parts of Indonesia, worsening air quality.

To address these challenges, Bali's government and local organisations are taking steps to improve air quality and reduce the impacts of weather-related factors on air pollution. These steps include forest fire prevention and control measures, early warning systems for volcanic activity, improving public transportation and reducing traffic congestion, promoting the use of renewable energy, and raising public awareness of behavior changes that can help reduce overall emissions.

 

What are the Wind and Wave Conditions in Bali?

Bali's wind and waves are largely affected by the seasonal monsoon winds, which are large-scale wind patterns that change direction depending on the season. During the dry season, which lasts from May to October, Bali experiences the southeast trade winds, which blow from Australia and create offshore winds on the west coast of Bali. These offshore winds, combined with the large swells from the Indian Ocean, make for ideal surfing conditions in breaks like Seminyak, Canggu, Kuta and Uluwatu. The east coast of Bali is generally less affected by the winds during the dry season, making it a popular spot for diving and snorkeling.

On the other hand, during the wet season from November to April, Bali experiences the northwest monsoon winds, which can bring strong onshore winds and rougher seas. During this time, the east coast of Bali is usually the better option for surfing, at breaks such as Nusa Dua and Sanur. The sea temperatures can also drop during the wet season, making it less comfortable for swimmers.

According to the Indonesian Agency for Meteorology, Climatology and Geophysics (BMKG), Bali's wind speeds during the months of June to September can reach up to 22 km/h on average, with gusts up to 50 km/h in some areas. These strong winds can create dangerous conditions for water sports and beach activities, and it's important to check weather forecasts and local advisories before heading out.

Bali's beaches are also subject to strong currents year-round, with rip currents being a common hazard. The Bali Lifesaving Association reports an average of 12 drowning incidents per year due to rip currents. To stay safe, swimmers should always swim near a lifeguard station and follow their instructions.

 

Does Bali have Extreme Weather?

While Bali's tropical climate generally provides temperate weather throughout the year, the island is not immune to extreme weather events like tropical cyclones. These powerful storms can cause significant damage to infrastructure and affect travel plans.

Tropical cyclones, also known as typhoons or hurricanes, are low-pressure systems that form over warm tropical waters. Bali is situated in an area where these storms can occur, especially during the peak of the tropical cyclone season.

The tropical cyclone season in Bali is mainly determined by the summer monsoon, which causes significant amounts of rain due to changes in wind pattern. This season typically runs from November to April, which coincides with Bali's wet season. During this period, Bali can experience heavy rainfall, strong winds, and flash flooding. It is important to note that not all tropical storms and cyclones directly impact Bali, but the island can still feel the effects of storms that form in the surrounding area.

It's important to keep an eye on weather reports and stay informed during the tropical cyclone season. In the event of a storm or cyclone, it's advisable to follow the advice of local authorities and take necessary precautions to ensure your safety.

 

Does Climate Change Impact Bali's Weather?

Bali is experiencing changes in its weather patterns due to climate change, with rising temperatures and altered rainfall patterns having significant impacts on the island's ecosystems and economy. The average temperature in Bali has risen by about 0.2-0.3°C over the last 50 years. This warming trend has led to changes in the timing and duration of Bali's wet and dry seasons, as well as more frequent extreme weather events such as heatwaves and heavy rainfall.

These changes in weather patterns are having significant impacts on Bali's ecosystems and agriculture. For example, changes in rainfall patterns have affected crop yields and caused water shortages in some areas. In addition, rising sea levels and increased storm surges are putting coastal areas at risk of flooding and erosion, which could have major impacts on Bali's tourism industry. According to a report by the Asian Development Bank, Bali's tourism sector could experience losses of up to 70% due to climate change impacts such as flooding, sea level rise, and coral bleaching. To address these challenges, Bali has taken steps to mitigate the impacts of climate change and promote sustainable development. These include investments in renewable energy, improvements in waste management and water conservation, and efforts to promote sustainable tourism practices. However, more needs to be done to ensure that Bali's ecosystems and economy remain resilient in the face of ongoing climate change.

 

Bali Weather & Climate by Region

Year-round hot temperatures, high humidity and frequent rainfall are expected of Bali’s tropical climate. However, due to the island’s diverse topography, different regions will experience slightly different weather patterns. The mountains, valleys and coastal regions of Bali each have their own weather characteristics and conditions – for example the mountainous areas tend to be cooler and experience more rainfall than the coastal regions. The coast is also often more humid than central Bali. We go into a bit more detail on each region below to help you plan and pack accordingly for your trip to Bali.

 

What is the Weather like in Coastal Bali?

The shore at Amed beach, with beach umbrellas and sun loungers and mountains in the background by Bernard Hermant

Credit: Bernard Hermant from Unsplash

Bali’s coastal region – made up of the popular beaches like Kuta, Seminyak, Nusa Dua and Sanur - is characterised by high humidity, hot temperatures, and rainfall throughout the year. The tropical weather of Bali’s coast is often hotter and more humid than central Bali and the mountainous region, with average temperatures typically ranging between 24°C and 32°C. Rainfall is often heaviest and more frequent during the wet season, which usually runs from November to April (but can vary slightly). The average humidity in Bali’s coastal region is 80 – 85% and is often higher during the wet season compared to the dry season. January is usually the rainiest month with the highest humidity, so days often feel muggy and hot. July and August are typically the best months to visit Bali’s beaches, with an average maximum temperature of 29 – 30°C, humidity of 75 – 80% and minimal rainfall. Make sure to pack your swimwear, sandals and lightweight beach clothes when travelling to Bali’s coast – and don’t forget a small umbrella or poncho, too.

 

What is the Weather like in Bali's Mountains?

Green trees and white clouds over Mount Batur in Bali by Polina Kuzovkova

Credit: Polina Kuzovkova from Unsplash

The lush mountainous areas of Bali, including Mount Batur and Mount Agung, are known to experience cooler and less humid conditions than the coastal region, and tend to receive increased rainfall, too. Nighttime temperatures are often cooler in the mountainous regions. The cooler and wetter conditions are due to the higher elevation compared to the coast, as well as the wind patterns that are affected by the mountains. Temperatures vary significantly according to elevation, so you should expect it to get colder as you reach the peak of Bali’s mountains.

December to February tend to be the wettest months to visit Mount Batur and Mount Agung. For the best chances of a clear day (and less muddy route), plan your trip between May and September when you have a better chance of a clearer day (and less muddy route!) If heading to the mountain areas of Bali, make sure to wear warm layers and be prepared for rain. It’s highly recommended to do the trek as part of a guided tour, just make sure to check the weather forecast before your trek!

Mt Batur Weather

Mt Batur is one of Bali's most active volcanoes, located in the northeast part of the island. It stands at an elevation of 1,717 metres above sea level and is a popular hiking destination among visitors. The average temperature at the summit of Mt Batur is around 15°C, making it significantly cooler than the surrounding lowlands. Temperatures can drop to as low as 10°C at night, so it's important to bring warm clothing if you plan on hiking to the summit. By the same token, during the day it becomes very hot - with an average yearly maximum temperature of 29°C at Mt Batur’s base.

Mt Batur receives around 1,700 – 2,500 mm of rainfall annually, with the majority falling during the wet season. During this period, the average monthly rainfall is between 200 mm and 350 mm, which makes hiking conditions challenging. The dry season runs from May to October, with lower rainfall and more sunny days. However, even during the dry season, there can still be occasional rain showers, so it's important to be prepared with rain gear.

Mt Agung Weather

Mt Agung is Bali's highest volcano, standing at an elevation of 3,031 metres above sea level. The average temperature at the summit of Mt Agung is around 10°C, making it significantly cooler than the surrounding lowlands. At night, temperatures at the peak can drop to as low as 5°C, so warm clothing is necessary for those planning to hike to the summit. During the day Mt Agung can be quite hot, with an annual average maximum temperature of 30°C at Agung’s base – so bring layered clothing.

On average, Mt Agung receives around 2,500 – 2,900 mm of rainfall per year. This rainfall is essential for supporting the fertile vegetation that covers the slopes of the mountain, including coffee and rice plantations. The wettest months are in the rainy season from November to April, when heavy rain often makes hiking difficult. It’s best to come during the dry season (May to October) for safety and an enjoyable hike. However, even during the dry season, there can still be occasional rain showers, so it's important to be prepared with rain gear.

 

What is the Weather like in Central Bali?

Three coconut trees surrounded by rice paddies with a mountain in the background in central Bali by Lucija Ros

Credit: Lucija Ros from Unsplash

Central Bali, including Kintamani, Ubud and the nearby Tegallalang Rice Terraces and Tegenungan Waterfall, is characterised by warm temperatures, high humidity and frequent rainfall. Central areas tend to be cooler and wetter than Bali’s coastal areas, like Kuta and Seminyak, but more humid than the mountainous areas, like Mount Agung and Mount Batur.

Average daily temperatures in central Bali range between 22 – 31°C, with October and November being the hottest months. The region experiences higher rainfall than coastal Bali, with annual rainfall averaging between 2,400 – 2,700 mm – January is typically the wettest month, with long and heavy periods of rain. The dry season (May to October) tends to have lower rainfall and slightly cooler temperatures, making it a good time for visitors who want to avoid the chance of wet, muggy days. Either way, it’s always a good idea to be prepared and to take wet-weather gear when travelling to central Bali.