Climate averages 1991–2020
Pontianak weather
in September.
A hot, very wet month: the 2nd warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Pontianak: daytime highs average 30.3°C and nights cool to about 23.7°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 191 mm of rain on roughly 21 days, which makes September a very wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 07 min on an average September day.
The nearest other city in this atlas is Singkawang (111 km away). In September its highs average 29.3°C, 1.1°C cooler than Pontianak, with 203 mm of rain.
Among the 200 cities listed in Indonesia, Pontianak ranks joint 94th of 200 for the warmest September highs and joint 168th of 200 for the driest September (rainfall, lowest first). The mean September high of those 200 cities is 30.1°C; Pontianak is 0.2°C warmer than that mean.
From September to October, average highs fall by 0.8°C to 29.6°C, and monthly rainfall rises from 191 mm to 309 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Pontianak climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.0°C23.4°C | 23.4°C | 259 | 24.8 | 12.112 h |
| February | 29.5°C23.6°C | 23.6°C | 173 | 19.7 | 12.112 h |
| March | 29.9°C23.8°C | 23.8°C | 199 | 23.0 | 12.112 h |
| April | 29.9°C24.0°C | 24.0°C | 256 | 27.4 | 12.112 h |
| May | 30.1°C24.2°C | 24.2°C | 225 | 24.8 | 12.112 h |
| June | 30.0°C24.1°C | 24.1°C | 170 | 19.8 | 12.112 h |
| July | 30.1°C23.8°C | 23.8°C | 149 | 17.9 | 12.112 h |
| August | 30.5°C23.9°C | 23.9°C | 141 | 17.1 | 12.112 h |
| September, selected | 30.3°C23.7°C | 23.7°C | 191 | 20.7 | 12.112 h |
| October | 29.6°C23.6°C | 23.6°C | 309 | 27.6 | 12.112 h |
| November | 28.9°C23.5°C | 23.5°C | 386 | 29.0 | 12.112 h |
| December | 28.7°C23.5°C | 23.5°C | 364 | 28.1 | 12.112 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Singkawang in SeptemberIndonesia · 111 kmHigh 29.3°C · Low 24.3°C · 203 mm rain
- Kuching in SeptemberMalaysia · 209 kmHigh 30.2°C · Low 23.9°C · 257 mm rain
- Sintang in SeptemberIndonesia · 242 kmHigh 30.5°C · Low 23.4°C · 237 mm rain
- Tanjung Pandan in SeptemberIndonesia · 354 kmHigh 30.7°C · Low 24.4°C · 104 mm rain
- Sibu in SeptemberMalaysia · 379 kmHigh 30.3°C · Low 23.4°C · 242 mm rain
- Pangkalanbuun in SeptemberIndonesia · 390 kmHigh 30.5°C · Low 23.8°C · 132 mm rain
- Sungailiat in SeptemberIndonesia · 410 kmHigh 29.8°C · Low 24.9°C · 119 mm rain
- Pangkalpinang in SeptemberIndonesia · 426 kmHigh 30.0°C · Low 24.5°C · 120 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Pontianak) is explained once on the Pontianak year overview and on the Sources, method and limits page.