Jakarta weather in September
In September, Jakarta has an average high of 30 °C86 °F and an average low of 25 °C76 °F, with about 66 mm2.6 in of precipitation. It is the 5th warmest month of the year and ranks 11th for precipitation.
How September compares with other months
Compared with August, September is 0.7 °C1.2 °F warmer on average and wetter by 17 mm0.7 in. Compared with October, September is 0.5 °C1 °F cooler on average and drier by 68 mm2.7 in. Daylight lasts about 12.1 hours around the middle of the month. Average relative humidity is 76% and the average cloud amount 60%.
Is September a good time to visit Jakarta?
Yes — September is one of the most comfortable months to visit Jakarta by our comfort score, which favours average highs of 21–28 °C, lows above 5 °C, little rain and moderate humidity.
What to wear in September
For Jakarta in September, pack very light, breathable clothing, a sun hat and plenty of water.
September in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Jakarta | 3086 | 2576 | 662.6 |
| Depok | 3289 | 2272 | 833.3 |
| Curug | 3189 | 2373 | 823.2 |
| Cikarang | 3290 | 2373 | 833.3 |
| Rengasdengklok | 3085 | 2577 | 562.2 |
| Karawang | 3290 | 2373 | 702.8 |
| Cianjur | 2883 | 1966 | 1034.0 |
| Serang | 3087 | 2576 | 722.8 |
| Sukabumi | 2781 | 1864 | 1034.0 |
Nearby places that are more than 1 °C1.8 °F cooler: Cianjur and Sukabumi.
Other months in Jakarta
- January29 °C84 °F / 25 °C77 °F
- February28 °C83 °F / 25 °C77 °F
- March29 °C84 °F / 25 °C78 °F
- April29 °C85 °F / 26 °C78 °F
- May30 °C85 °F / 26 °C79 °F
- June29 °C85 °F / 25 °C78 °F
- July29 °C84 °F / 25 °C76 °F
- August29 °C85 °F / 24 °C76 °F
- September30 °C86 °F / 25 °C76 °F
- October31 °C87 °F / 26 °C78 °F
- November30 °C86 °F / 26 °C79 °F
- December29 °C85 °F / 25 °C78 °F
Frequently asked questions
How warm is Jakarta in September?
In September the average high in Jakarta is 30 °C (86 °F) and the average low is 25 °C (76 °F).
Does it rain a lot in Jakarta in September?
On average about 66 mm (2.6 in) of precipitation falls in September; it ranks 11th of the 12 months.
Is September the warmest month in Jakarta?
No. The warmest month in Jakarta is October, with an average high of 31 °C (87 °F). The coldest month is August, with an average low of 24 °C (76 °F).
How long is the day in Jakarta in September?
In the middle of September the day in Jakarta lasts about 12.1 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Jakarta in September?
The average relative humidity in September is about 76%. Combined with warm days, it can feel muggy.
How cloudy is Jakarta in September?
On average about 60% of the sky is covered by cloud in September. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.