Indonesia climate guide

Temperature in Indonesia (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
30°C maximum daytime temperature in January in Indonesia (Jakarta)30
31°C maximum daytime temperature in February in Indonesia (Jakarta)31
32°C maximum daytime temperature in March in Indonesia (Jakarta)32
33°C maximum daytime temperature in April in Indonesia (Jakarta)33
33°C maximum daytime temperature in May in Indonesia (Jakarta)33
32°C maximum daytime temperature in June in Indonesia (Jakarta)32
32°C maximum daytime temperature in July in Indonesia (Jakarta)32
33°C maximum daytime temperature in August in Indonesia (Jakarta)33
33°C maximum daytime temperature in September in Indonesia (Jakarta)33
33°C maximum daytime temperature in October in Indonesia (Jakarta)33
32°C maximum daytime temperature in November in Indonesia (Jakarta)32
32°C maximum daytime temperature in December in Indonesia (Jakarta)32
Min temperature (night-time)
23°C minimum night-time temperature in January in Indonesia (Jakarta)23
23°C minimum night-time temperature in February in Indonesia (Jakarta)23
23°C minimum night-time temperature in March in Indonesia (Jakarta)23
23°C minimum night-time temperature in April in Indonesia (Jakarta)23
23°C minimum night-time temperature in May in Indonesia (Jakarta)23
23°C minimum night-time temperature in June in Indonesia (Jakarta)23
22°C minimum night-time temperature in July in Indonesia (Jakarta)22
22°C minimum night-time temperature in August in Indonesia (Jakarta)22
23°C minimum night-time temperature in September in Indonesia (Jakarta)23
23°C minimum night-time temperature in October in Indonesia (Jakarta)23
23°C minimum night-time temperature in November in Indonesia (Jakarta)23
23°C minimum night-time temperature in December in Indonesia (Jakarta)23
Sea temperature
28°C sea temperature in January in Indonesia (Jakarta)28
28°C sea temperature in February in Indonesia (Jakarta)28
29°C sea temperature in March in Indonesia (Jakarta)29
29°C sea temperature in April in Indonesia (Jakarta)29
30°C sea temperature in May in Indonesia (Jakarta)30
29°C sea temperature in June in Indonesia (Jakarta)29
29°C sea temperature in July in Indonesia (Jakarta)29
28°C sea temperature in August in Indonesia (Jakarta)28
29°C sea temperature in September in Indonesia (Jakarta)29
29°C sea temperature in October in Indonesia (Jakarta)29
29°C sea temperature in November in Indonesia (Jakarta)29
29°C sea temperature in December in Indonesia (Jakarta)29

Sunshine & Daylight in Indonesia

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
12 hours of daylight per day in January in Indonesia (Jakarta)12
12 hours of daylight per day in February in Indonesia (Jakarta)12
12 hours of daylight per day in March in Indonesia (Jakarta)12
12 hours of daylight per day in April in Indonesia (Jakarta)12
12 hours of daylight per day in May in Indonesia (Jakarta)12
12 hours of daylight per day in June in Indonesia (Jakarta)12
12 hours of daylight per day in July in Indonesia (Jakarta)12
12 hours of daylight per day in August in Indonesia (Jakarta)12
12 hours of daylight per day in September in Indonesia (Jakarta)12
12 hours of daylight per day in October in Indonesia (Jakarta)12
12 hours of daylight per day in November in Indonesia (Jakarta)12
12 hours of daylight per day in December in Indonesia (Jakarta)12

Rainfall in Indonesia

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
17 days with some rainfall in January in Indonesia (Jakarta)17
14 days with some rainfall in February in Indonesia (Jakarta)14
16 days with some rainfall in March in Indonesia (Jakarta)16
15 days with some rainfall in April in Indonesia (Jakarta)15
14 days with some rainfall in May in Indonesia (Jakarta)14
11 days with some rainfall in June in Indonesia (Jakarta)11
9 days with some rainfall in July in Indonesia (Jakarta)9
8 days with some rainfall in August in Indonesia (Jakarta)8
8 days with some rainfall in September in Indonesia (Jakarta)8
12 days with some rainfall in October in Indonesia (Jakarta)12
17 days with some rainfall in November in Indonesia (Jakarta)17
18 days with some rainfall in December in Indonesia (Jakarta)18
Average monthly rainfall (mm)
406 mm monthly rainfall in January in Indonesia (Jakarta)406
298 mm monthly rainfall in February in Indonesia (Jakarta)298
245 mm monthly rainfall in March in Indonesia (Jakarta)245
195 mm monthly rainfall in April in Indonesia (Jakarta)195
173 mm monthly rainfall in May in Indonesia (Jakarta)173
100 mm monthly rainfall in June in Indonesia (Jakarta)100
77 mm monthly rainfall in July in Indonesia (Jakarta)77
77 mm monthly rainfall in August in Indonesia (Jakarta)77
93 mm monthly rainfall in September in Indonesia (Jakarta)93
146 mm monthly rainfall in October in Indonesia (Jakarta)146
174 mm monthly rainfall in November in Indonesia (Jakarta)174
225 mm monthly rainfall in December in Indonesia (Jakarta)225

More climate for Indonesia

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (Maximum)
UV (maximum) index 11+ (Extreme) in January in Indonesia (Jakarta)11
UV (maximum) index 11+ (Extreme) in February in Indonesia (Jakarta)11
UV (maximum) index 11+ (Extreme) in March in Indonesia (Jakarta)11
UV (maximum) index 11+ (Extreme) in April in Indonesia (Jakarta)11
UV (maximum) index 11 (Extreme) in May in Indonesia (Jakarta)11
UV (maximum) index 10 (Very High) in June in Indonesia (Jakarta)10
UV (maximum) index 10 (Very High) in July in Indonesia (Jakarta)10
UV (maximum) index 11+ (Extreme) in August in Indonesia (Jakarta)11
UV (maximum) index 11+ (Extreme) in September in Indonesia (Jakarta)11
UV (maximum) index 11+ (Extreme) in October in Indonesia (Jakarta)11
UV (maximum) index 11+ (Extreme) in November in Indonesia (Jakarta)11
UV (maximum) index 11+ (Extreme) in December in Indonesia (Jakarta)11
Heat & Humidity
High heat & humidity in January in Indonesia (Jakarta)H
Very high heat & humidity in February in Indonesia (Jakarta)VH
Very high heat & humidity in March in Indonesia (Jakarta)VH
Very high heat & humidity in April in Indonesia (Jakarta)VH
Very high heat & humidity in May in Indonesia (Jakarta)VH
Very high heat & humidity in June in Indonesia (Jakarta)VH
Very high heat & humidity in July in Indonesia (Jakarta)VH
Very high heat & humidity in August in Indonesia (Jakarta)VH
Very high heat & humidity in September in Indonesia (Jakarta)VH
Very high heat & humidity in October in Indonesia (Jakarta)VH
Very high heat & humidity in November in Indonesia (Jakarta)VH
Very high heat & humidity in December in Indonesia (Jakarta)VH

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

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The climate guide for Indonesia, represented by Jakarta, shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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Metric (°C / mm)  |  Imperial (°F / inches)

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Indonesia climate overview

Indonesia is the largest archipelago in the world with over 15,000 islands ranging in size from hundreds of kilometres across to tiny palm fringed atolls. It sits astride the Equator in South East Asia stretching over 5,000 kilometres (3,200 miles) from the Indian Ocean to the Pacific, further than the distance from Los Angeles to New York.

With its rich cultural heritage and diverse population Indonesia offers travellers an enormous variety of destinations and holiday experiences. Apart from spectacular mountain volcanoes, deep tropical rainforest and miles of white sandy beaches there is history, architecture, music, dance and traditional crafts.

Indonesia is the fourth most populated country in the world and over half the 240 million population lives on the relatively small island of Java, making this the most densely populated place on earth.

The vegetation throughout the country is tropical with large areas of rainforest still standing on the islands of Sumatra, Borneo, and New Guinea. Much of the original forest on Java has been cleared for cultivation, mainly for rice, however areas of wilderness can still be found such as at the Ujung Kulon National Park in the west.

Sumatra and Borneo are much wilder than Java although increasing tracts of forest are now being cleared for rubber and palm oil plantations. Western New Guinea on the other hand is very remote and contains some of the most inaccessible places on earth.

A chain of volcanic mountains stretches down the western side of Sumatra, extending to Java and Bali and through the islands of Nusa Tenggara to the east. Within this chain there are about 70 active volcanoes, most of which have erupted at some time in the past 100 years.

Lake Toba in Northern Sumatra was the scene of a mega-volcanic eruption 72,000 years ago which, it is estimated, killed most of the inhabitants of South East Asia, while the eruption of Krakatoa in 1883, though tiny by comparison, is still one of the largest in recorded history.

There are only two types of weather in Indonesia, fine and sunny or cloudy and wet. Temperatures are fairly constant throughout the year and depend mainly on elevation above sea level, while heat and humidity is high in all months. All the islands lie outside the tropical cyclone belt although some in the extreme south, such as Timor and Sumba, are occasionally affected by cyclones.

The wet season arrives in November on the north-west monsoon which blows until March bringing rain from the Indian Ocean to most of the country. Usually during this time the further west and north you are the more rain there is. However there is generally also a fair amount of sunshine during the wet season almost everywhere except in the mountains. In Bali for example, in the south of the island, there will be on average 8 hours of sunshine each day during December, January and February.

Generally drier weather conditions prevail during the south-east monsoon period from June to September especially over the islands nearest to Australia which includes Java and Bali and Lombok.

Daytime temperatures are only a degree or so cooler than during the wet season, but there is noticeably less heat and humidity at night. Unusually the central islands of the Moluccas, with destinations such as Ambon and Banda, experience their wet season during this time.

Indonesia is one of the most active volcanic and seismic areas in the world with earthquakes recorded almost every day and more volcanic eruptions than any other region in the world. The northern part of Sumatra, particularly the Aceh region, was hit hard by the Asian Tsunami of December 2004. Tens of thousands of lives were lost, and damage was extensive.

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Popular Indonesia destinations

Below are average maximum temperatures at popular destinations in Indonesia in the current month - July. Select a destination to see more weather parameters.

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