Jakarta weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Fair
Best time to visit: August
What is the weather like in Jakarta in September?
In September, Jakarta is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 61 mm in total. On about 25 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a so-so month for a holiday in Jakarta.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 55 | 48 | 31 |
| Day | 31° | 31° | 31° |
| Night | 23° | 24° | 24° |
| Sun | 6 h | 6 h | 5 h |
| Rain days | 9 | 11 | 18 |
More details for September
- Daylight
- 12 h 4 min05:46 – 17:50
- UV index
- 13 · extremeclear sky, noon (estimate)All months
- Muggy days
- 30 daysdew point 18 °C or moreAll months
- Wind
- 12 km/haverage daily peakAll months
- Cloud cover
- 64 %on averageAll months
- Hot days
- 25 days30 °C or moreAll months
- Time zone
- UTC+7Asia/Jakarta
How the score comes together
- Temperatureweight 50 %48 %
- Sunshineweight 20 %48 %
- Few rainy daysweight 30 %49 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Jakarta in September: quick answers
Is Jakarta hot in September?
Yes. In September, Jakarta is hot: daytime highs average 31 °C and nights stay around 24 °C. On about 25 days the thermometer climbs to 30 °C or more.
Does it rain much in Jakarta in September?
Rain is frequent, with about 11 rainy days and 61 mm in total.
Jakarta month by month
The whole year in JakartaAll destinations: IndonesiaWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences