Climate and Average Weather Year Round in Indonesia

We show the climate in Indonesia by comparing the average weather in 3 representative places: Jakarta, Surabaya, and Medan.

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Surabaya
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Medan
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Average High and Low Temperature in Indonesia

Average High and Low Temperature in IndonesiaJanFebMarAprMayJunJulAugSepOctNovDec74°F74°F76°F76°F78°F78°F80°F80°F82°F82°F84°F84°F86°F86°F88°F88°F90°F90°F92°F92°F94°F94°F76749186799388749186NowNowJakartaJakartaSurabayaSurabayaMedanMedan
The daily average high and low air temperature at 2 meters above the ground.
HighJanFebMarAprMayJunJulAugSepOctNovDec
Jakarta 86°F86°F88°F89°F89°F89°F89°F89°F90°F90°F90°F88°F
Surabaya 88°F88°F89°F89°F90°F89°F89°F89°F91°F92°F91°F89°F
Medan 87°F88°F90°F90°F90°F90°F90°F89°F88°F87°F87°F86°F
LowJanFebMarAprMayJunJulAugSepOctNovDec
Jakarta 76°F75°F76°F76°F76°F75°F74°F74°F75°F76°F76°F76°F
Surabaya 77°F77°F77°F78°F78°F76°F75°F75°F76°F78°F78°F78°F
Medan 75°F75°F75°F76°F76°F76°F75°F75°F75°F75°F75°F75°F

Jakarta

Average Hourly Temperature in JakartaJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowwarmhothotcomfortable

Surabaya

Average Hourly Temperature in SurabayaJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowwarmwarmhot

Medan

Average Hourly Temperature in MedanJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowwarmwarmhot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Chance of Clearer Skies in Indonesia

Chance of Clearer Skies in IndonesiaJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%371048215NowNowJakartaJakartaSurabayaSurabayaMedanMedan
The percentage of time the sky is clear, mostly clear, or partly cloudy (i.e., less than 60% of the sky is covered by clouds).
Clearer SkiesJanFebMarAprMayJunJulAugSepOctNovDec
Jakarta 11%11%15%17%22%31%35%35%30%20%13%12%
Surabaya 10%11%16%22%33%42%44%46%38%27%14%11%
Medan 19%20%16%10%6%9%9%8%6%6%7%13%

Daily Chance of Precipitation in Indonesia

Daily Chance of Precipitation in IndonesiaJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%76177036428NowNowJakartaJakartaSurabayaSurabayaMedanMedan
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip.JanFebMarAprMayJunJulAugSepOctNovDec
Jakarta 22.6d19.7d18.9d16.1d12.8d8.2d7.1d5.8d7.4d12.0d17.3d19.8d
Surabaya 21.0d19.0d17.9d13.3d8.9d5.5d3.0d1.3d2.0d5.2d11.7d18.4d
Medan 10.9d8.1d11.3d11.6d13.5d11.0d12.5d15.1d18.0d19.5d18.3d16.4d

Average Monthly Rainfall in Indonesia

Average Monthly Rainfall in IndonesiaJanFebMarAprMayJunJulAugSepOctNovDec2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in11.91.911.10.310.03.3NowNowJakartaJakartaSurabayaSurabayaMedanMedan
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.
RainfallJanFebMarAprMayJunJulAugSepOctNovDec
Jakarta 11.4″10.5″7.0″5.7″4.1″2.6″2.2″1.9″2.2″3.7″6.0″7.7″
Surabaya 10.9″10.5″8.4″5.5″3.1″2.1″1.0″0.3″0.6″1.7″4.4″8.8″
Medan 4.3″3.4″4.4″4.8″6.3″5.1″5.3″7.0″9.4″10.0″9.2″8.2″

Hours of Daylight in Indonesia

Hours of Daylight in IndonesiaJanFebMarAprMayJunJulAugSepOctNovDec4 hr4 hr6 hr6 hr8 hr8 hr10 hr10 hr12 hr12 hr14 hr14 hr16 hr16 hr18 hr18 hr20 hr20 hr12.511.812.311.9NowNowJakartaJakartaSurabayaSurabayaMedanMedan
The number of hours during which the Sun is at least partly above the horizon.
DaylightJanFebMarAprMayJunJulAugSepOctNovDec
Jakarta 12.4h12.3h12.1h12.0h11.8h11.8h11.8h11.9h12.1h12.2h12.4h12.5h
Surabaya 12.5h12.3h12.1h11.9h11.8h11.7h11.7h11.9h12.1h12.3h12.4h12.5h
Medan 11.9h12.0h12.1h12.2h12.3h12.3h12.3h12.2h12.1h12.0h12.0h11.9h

Chance of Muggy Conditions in Indonesia

Chance of Muggy Conditions in IndonesiaJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%1009810092100100NowNowJakartaJakartaSurabayaSurabaya
The percentage of time that is muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).
Muggy daysJanFebMarAprMayJunJulAugSepOctNovDec
Jakarta 31.0d28.0d31.0d30.0d31.0d29.9d30.7d30.4d29.6d30.8d29.9d31.0d
Surabaya 31.0d28.0d31.0d30.0d30.9d29.6d30.0d28.9d28.1d30.0d29.9d31.0d
Medan 31.0d28.0d31.0d30.0d31.0d29.9d30.9d31.0d30.0d31.0d30.0d31.0d

Average Wind Speed in Indonesia

Average Wind Speed in IndonesiaJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mph7.65.08.85.14.43.3NowNowJakartaJakartaSurabayaSurabayaMedanMedan
The average of mean hourly wind speeds at 10 meters above the ground.
Wind Speed (mph)JanFebMarAprMayJunJulAugSepOctNovDec
Jakarta 7.57.16.15.45.45.55.75.75.35.05.36.8
Surabaya 7.77.65.75.66.77.58.38.78.26.95.46.0
Medan 4.44.24.03.63.33.43.43.53.43.63.94.3

Average Water Temperature in Indonesia

Average Water Temperature in IndonesiaJanFebMarAprMayJunJulAugSepOctNovDec82.0°F82.0°F82.5°F82.5°F83.0°F83.0°F83.5°F83.5°F84.0°F84.0°F84.5°F84.5°F85.0°F85.0°F85.5°F85.5°F86.0°F86.0°F86.5°F86.5°F87.0°F87.0°F858386838683NowNowJakartaJakartaSurabayaSurabayaMedanMedan
The daily average wide-area surface water temperature.
Water Temp.JanFebMarAprMayJunJulAugSepOctNovDec
Jakarta 83°F83°F84°F85°F85°F85°F84°F84°F84°F85°F85°F84°F
Surabaya 84°F83°F84°F85°F85°F84°F83°F83°F83°F84°F85°F85°F
Medan 83°F84°F85°F85°F86°F86°F86°F86°F85°F85°F84°F83°F

Tourism Score in Indonesia

Tourism Score in IndonesiaJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.13.12.94.12.9NowNowJakartaJakartaSurabayaSurabayaMedanMedan
The tourism score, which favors clear, rainless days with perceived temperatures between 65°F and 80°F.

Beach/Pool Score in Indonesia

Beach/Pool Score in IndonesiaJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.43.87.25.33.8NowNowJakartaJakartaSurabayaSurabayaMedanMedan
The beach/pool score, which favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Growing Season in Indonesia

Growing Season in IndonesiaJanFebMarAprMayJunJulAugSepOctNovDec0%0%20%20%40%40%60%60%80%80%100%100%NowNowJakartaJakartaSurabayaSurabayaMedanMedan
The percentage chance that a given day is within the growing season, defined as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Growing Degree Days in Indonesia

Growing Degree Days in IndonesiaJanFebMarAprMayJunJulAugSepOctNovDec2,000°F2,000°F4,000°F4,000°F6,000°F6,000°F8,000°F8,000°F10,000°F10,000°F12,000°F12,000°FNowNowJakartaJakartaSurabayaSurabayaMedanMedan
The average growing degree days accumulated over the course of the year, where growing degree days are defined as the integral of warmth above a base temperature (50°F in this case).

Average Daily Incident Shortwave Solar Energy in Indonesia

Average Daily Incident Shortwave Solar Energy in IndonesiaJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh6.34.36.95.13.6NowNowJakartaJakartaSurabayaSurabayaMedanMedan
The average daily shortwave solar energy reaching the ground per square meter.
Solar Energy (kWh)JanFebMarAprMayJunJulAugSepOctNovDec
Jakarta 4.44.44.64.54.64.85.35.96.25.64.84.5
Surabaya 4.34.34.74.95.25.35.86.56.96.55.24.4
Medan 4.75.04.94.54.04.04.04.13.93.83.63.9

This report illustrates the typical weather for Jakarta, Surabaya, and Medan year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used on this page vary between places and are discussed in detail on each place's dedicated page:

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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