Climate averages 1991–2020
Balikpapan weather
in September.
A hot, wet month: the 9th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Balikpapan: daytime highs average 28.2°C and nights cool to about 24.6°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 109 mm of rain on roughly 17 days, which makes September a wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 06 min on an average September day.
The nearest other city in this atlas is Nusantara (35 km away). In September its highs average 29.9°C, 1.7°C warmer than Balikpapan, with 155 mm of rain.
Among the 200 cities listed in Indonesia, Balikpapan ranks joint 167th of 200 for the warmest September highs and joint 127th of 200 for the driest September (rainfall, lowest first). The mean September high of those 200 cities is 30.1°C; Balikpapan is 1.9°C cooler than that mean.
From September to October, average highs rise by 0.2°C to 28.4°C, and monthly rainfall rises from 109 mm to 158 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
Balikpapan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.3°C23.9°C | 23.9°C | 258 | 27.5 | 12.212 h |
| February | 28.5°C24.0°C | 24.0°C | 228 | 24.0 | 12.212 h |
| March | 28.6°C24.1°C | 24.1°C | 271 | 27.8 | 12.112 h |
| April | 28.6°C24.2°C | 24.2°C | 264 | 27.5 | 12.112 h |
| May | 28.3°C24.6°C | 24.6°C | 198 | 27.6 | 12.112 h |
| June | 27.9°C24.4°C | 24.4°C | 172 | 24.9 | 12.012 h |
| July | 27.5°C24.3°C | 24.3°C | 142 | 22.3 | 12.112 h |
| August | 27.8°C24.6°C | 24.6°C | 101 | 17.9 | 12.112 h |
| September, selected | 28.2°C24.6°C | 24.6°C | 109 | 17.0 | 12.112 h |
| October | 28.4°C24.5°C | 24.5°C | 158 | 22.3 | 12.112 h |
| November | 28.3°C24.1°C | 24.1°C | 218 | 27.5 | 12.212 h |
| December | 28.4°C24.1°C | 24.1°C | 268 | 28.8 | 12.212 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
- Nusantara in SeptemberIndonesia · 35 kmHigh 29.9°C · Low 23.4°C · 155 mm rain
- Loa Janan in SeptemberIndonesia · 82 kmHigh 30.6°C · Low 23.6°C · 167 mm rain
- Samarinda in SeptemberIndonesia · 93 kmHigh 30.6°C · Low 23.4°C · 173 mm rain
- Bontang in SeptemberIndonesia · 172 kmHigh 29.6°C · Low 24.4°C · 130 mm rain
- Martapura in SeptemberIndonesia · 323 kmHigh 31.8°C · Low 23.4°C · 74 mm rain
- Banjarbaru in SeptemberIndonesia · 328 kmHigh 31.9°C · Low 23.0°C · 74 mm rain
- Banjarmasin in SeptemberIndonesia · 338 kmHigh 31.6°C · Low 23.8°C · 69 mm rain
- Palangkaraya in SeptemberIndonesia · 340 kmHigh 31.9°C · Low 23.3°C · 113 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 Balikpapan) is explained once on the Balikpapan year overview and on the Sources, method and limits page.