Climate averages 1991–2020
Nusantara weather
in August.
A hot, wet month: the 10th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Nusantara: daytime highs average 29.2°C and nights cool to about 23.2°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 142 mm of rain on roughly 20 days, which makes August a wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 05 min on an average August day.
The nearest other city in this atlas is Balikpapan (35 km away). In August its highs average 27.8°C, 1.4°C cooler than Nusantara, with 101 mm of rain.
Among the 200 cities listed in Indonesia, Nusantara ranks joint 122nd of 200 for the warmest August highs and 161st of 200 for the driest August (rainfall, lowest first). The mean August high of those 200 cities is 29.5°C; Nusantara is 0.3°C cooler than that mean.
From August to September, average highs rise by 0.7°C to 29.9°C, and monthly rainfall rises from 142 mm to 155 mm.
The annual picture
August 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
Nusantara climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.5°C23.3°C | 23.3°C | 323 | 27.9 | 12.212 h |
| February | 29.8°C23.4°C | 23.4°C | 288 | 24.5 | 12.112 h |
| March | 29.9°C23.5°C | 23.5°C | 349 | 28.5 | 12.112 h |
| April | 29.8°C23.7°C | 23.7°C | 356 | 27.9 | 12.112 h |
| May | 29.5°C23.8°C | 23.8°C | 270 | 28.2 | 12.112 h |
| June | 29.0°C23.5°C | 23.5°C | 221 | 25.4 | 12.112 h |
| July | 28.7°C23.2°C | 23.2°C | 181 | 23.5 | 12.112 h |
| August, selected | 29.2°C23.2°C | 23.2°C | 142 | 20.3 | 12.112 h |
| September | 29.9°C23.4°C | 23.4°C | 155 | 18.9 | 12.112 h |
| October | 30.1°C23.5°C | 23.5°C | 222 | 24.0 | 12.112 h |
| November | 29.7°C23.5°C | 23.5°C | 308 | 28.4 | 12.212 h |
| December | 29.5°C23.5°C | 23.5°C | 349 | 29.4 | 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
August in nearby cities
- Balikpapan in AugustIndonesia · 35 kmHigh 27.8°C · Low 24.6°C · 101 mm rain
- Loa Janan in AugustIndonesia · 61 kmHigh 30.0°C · Low 23.5°C · 159 mm rain
- Samarinda in AugustIndonesia · 72 kmHigh 30.0°C · Low 23.3°C · 160 mm rain
- Bontang in AugustIndonesia · 150 kmHigh 29.2°C · Low 24.3°C · 124 mm rain
- Palangkaraya in AugustIndonesia · 339 kmHigh 31.2°C · Low 23.1°C · 87 mm rain
- Martapura in AugustIndonesia · 340 kmHigh 30.9°C · Low 23.3°C · 62 mm rain
- Banjarbaru in AugustIndonesia · 344 kmHigh 31.0°C · Low 22.8°C · 62 mm rain
- Banjarmasin in AugustIndonesia · 351 kmHigh 30.8°C · Low 23.5°C · 52 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 Nusantara) is explained once on the Nusantara year overview and on the Sources, method and limits page.