Climate averages 1991–2020
Banjarmasin weather
in January.
A hot, very wet month: the 11th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Banjarmasin: daytime highs average 29.3°C and nights cool to about 23.7°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 291 mm of rain on roughly 29 days, which makes January a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 17 min on an average January day.
The nearest other city in this atlas is Banjarbaru (30 km away). In January its highs average 29.2°C, about as warm as Banjarmasin, with 338 mm of rain.
Among the 200 cities listed in Indonesia, Banjarmasin ranks joint 22nd of 200 for the warmest January highs and joint 79th of 200 for the driest January (rainfall, lowest first). The mean January high of those 200 cities is 28.2°C; Banjarmasin is 1.1°C warmer than that mean.
From January to February, average highs rise by 0.3°C to 29.6°C, and monthly rainfall falls from 291 mm to 248 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- Banjarbaru in JanuaryIndonesia · 30 kmHigh 29.2°C · Low 23.3°C · 338 mm rain
- Martapura in JanuaryIndonesia · 32 kmHigh 29.4°C · Low 23.4°C · 338 mm rain
- Palangkaraya in JanuaryIndonesia · 145 kmHigh 30.0°C · Low 23.2°C · 282 mm rain
- Sampit in JanuaryIndonesia · 202 kmHigh 29.9°C · Low 23.6°C · 262 mm rain
- Pangkalanbuun in JanuaryIndonesia · 337 kmHigh 29.5°C · Low 23.5°C · 242 mm rain
- Balikpapan in JanuaryIndonesia · 338 kmHigh 28.3°C · Low 23.9°C · 258 mm rain
- Nusantara in JanuaryIndonesia · 351 kmHigh 29.5°C · Low 23.3°C · 323 mm rain
- Loa Janan in JanuaryIndonesia · 412 kmHigh 29.8°C · Low 23.3°C · 277 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.