Weather in Jakarta in September 2025
- September is usually the driest month of the year in Jakarta
Average weather
Average temperature in Jakarta in September
Going from a maximum of +36°C during the day to a minimum of +22°C during the night, the temperature in September averages around +35°C.
The average maximum temperature goes up 7% by the end of the month, compared with the beginning of the month, from +34°C to +35°C.
Is Jakarta warm or cold in September?
Jakarta is typically hot in September.
Maximum temperatures go up compared to the previous month from +32°C to +32°C. The minimum temperature also goes up from +24°C to +25°C.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
September is one of the warmest months in Jakarta, here is the comparison with other months:
Climate in Jakarta in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +32°C | +32°C | +32°C | ||||
| Min. temperature | ||||||
| +20°C | +21°C | +22°C | ||||
| Max. temperature | ||||||
| +36°C | +36°C | +38°C | ||||
| Rainfall | ||||||
| 45 mm | 61 mm | 128 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 77% | 76% | 78% | ||||
| Air pressure | ||||||
| 1010 HPa | 1010 HPa | 1009 HPa | ||||
| Sunny days | ||||||
| 2 | 2 | 1 | ||||
| Cloudy days | ||||||
| 11 | 9 | 5 | ||||
| Rainy days | ||||||
| 16 | 18 | 23 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September typically has worse weather conditions compared to August. The temperature levels stay the same in the area of +32°C for average maximum temperature during the day. Prepare for more rain. Average rainfall goes from 45 mm to 61 mm. It feels drier, as humidity decreases from 77% to 76%. The average wind speed doesn’t change much during September, staying around 1 m/s. The amount of sunny days stay about the same, averaging 2 sunny days during the month.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 3 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Jakarta is gradually increasing during September, going from 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Jakarta?
Climate Change over Years
The climate in Jakarta in September has not changed much over the last 43 years.
The average temperature was the lowest in 1984 (+30°C) and the highest in 2023 (+33°C). The driest year was 1997 with only 1181 mm of rainfall, and the wettest year was 1984 with 2582 mm.
FAQ
Is September a good time to visit Jakarta?
Can you sunbathe in Jakarta in September?
Is Jakarta rainy in September?
Is it sunny in Jakarta in September?
Other cities in Indonesia
Monthly weather in Jakarta
Source of the data
For this page, we’ve looked at the typical weather in Jakarta, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.