Climate averages 1991–2020
Banjarmasin weather
in August.
A hot, moderately wet month: the 3rd warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Banjarmasin: daytime highs average 30.8°C and nights cool to about 23.5°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 52 mm of rain on roughly 9 days, which makes August a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 00 min on an average August day.
The nearest other city in this atlas is Banjarbaru (30 km away). In August its highs average 31.0°C, about as warm as Banjarmasin, with 62 mm of rain.
Among the 200 cities listed in Indonesia, Banjarmasin ranks joint 47th of 200 for the warmest August highs and 92nd of 200 for the driest August (rainfall, lowest first). The mean August high of those 200 cities is 29.5°C; Banjarmasin is 1.3°C warmer than that mean.
From August to September, average highs rise by 0.8°C to 31.6°C, and monthly rainfall rises from 52 mm to 69 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
Banjarmasin climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.3°C23.7°C | 23.7°C | 291 | 28.7 | 12.312 h |
| February | 29.6°C23.8°C | 23.8°C | 248 | 25.1 | 12.212 h |
| March | 29.7°C23.9°C | 23.9°C | 277 | 28.2 | 12.112 h |
| April | 29.9°C24.1°C | 24.1°C | 236 | 27.3 | 12.012 h |
| May | 30.1°C24.2°C | 24.2°C | 149 | 22.5 | 12.012 h |
| June | 29.7°C23.9°C | 23.9°C | 113 | 17.5 | 11.912 h |
| July | 29.7°C23.4°C | 23.4°C | 89 | 14.5 | 11.912 h |
| August, selected | 30.8°C23.5°C | 23.5°C | 52 | 9.3 | 12.012 h |
| September | 31.6°C23.8°C | 23.8°C | 69 | 10.5 | 12.112 h |
| October | 31.4°C24.0°C | 24.0°C | 152 | 18.2 | 12.212 h |
| November | 30.0°C24.0°C | 24.0°C | 254 | 27.6 | 12.312 h |
| December | 29.2°C23.8°C | 23.8°C | 328 | 29.4 | 12.312 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
- Banjarbaru in AugustIndonesia · 30 kmHigh 31.0°C · Low 22.8°C · 62 mm rain
- Martapura in AugustIndonesia · 32 kmHigh 30.9°C · Low 23.3°C · 62 mm rain
- Palangkaraya in AugustIndonesia · 145 kmHigh 31.2°C · Low 23.1°C · 87 mm rain
- Sampit in AugustIndonesia · 202 kmHigh 30.6°C · Low 23.4°C · 94 mm rain
- Pangkalanbuun in AugustIndonesia · 337 kmHigh 30.0°C · Low 23.7°C · 99 mm rain
- Balikpapan in AugustIndonesia · 338 kmHigh 27.8°C · Low 24.6°C · 101 mm rain
- Nusantara in AugustIndonesia · 351 kmHigh 29.2°C · Low 23.2°C · 142 mm rain
- Loa Janan in AugustIndonesia · 412 kmHigh 30.0°C · Low 23.5°C · 159 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 Banjarmasin) is explained once on the Banjarmasin year overview and on the Sources, method and limits page.