Jakarta weather in September
September in Jakarta: sweltering, a little rain, with poor air quality — a good time to visit.
#4 of 12 months in Jakarta · #481 of 604 destinations to visit in September · comfort 64/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Jakarta climate normals — September
| Daytime high | 31°C / 88°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 24°C / 75°F | |
| Feels like (high) | 36°C / 97°F | |
| Rainfall | 77 mm / 3 in | 🌦 some rain |
| Rainy days | 11 days | |
| Humidity | 75% | 💧 humid |
| Dew point | 22°C / 71°F | |
| Sunshine | 10.9 h/day | |
| Daylight | 12.1 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 165 | ⚠️ unhealthy |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Jakarta in September — FAQ
- Is September a good time to visit Jakarta?
- September in Jakarta: sweltering, a little rain, with poor air quality — a good time to visit. It ranks #4 of 12 months for Jakarta on SeasonMap's comfort score (64/100).
- What is the weather like in Jakarta in September?
- In September, Jakarta averages a daily high of 31.2°C and a low of 23.7°C, with about 76.7 mm of rain over roughly 11.4 rainy days.
- What is the air quality in Jakarta in September?
- Jakarta has a mean US Air Quality Index of about 165 in September.