Climate averages 1991–2020
Nusantara weather
in December.
A hot, very wet month: the joint 7th warmest and the joint 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Nusantara: daytime highs average 29.5°C and nights cool to about 23.5°C. By daytime temperature it is the joint 7th warmest of the 12 months.
Expect about 349 mm of rain on roughly 29 days, which makes December a very wet month (the joint 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 11 min on an average December day.
The nearest other city in this atlas is Balikpapan (35 km away). In December its highs average 28.4°C, 1.2°C cooler than Nusantara, with 268 mm of rain.
Among the 200 cities listed in Indonesia, Nusantara ranks joint 31st of 200 for the warmest December highs and 130th of 200 for the driest December (rainfall, lowest first). The mean December high of those 200 cities is 28.4°C; Nusantara is 1.1°C warmer than that mean.
From December to January, average highs fall by 0.1°C to 29.5°C, and monthly rainfall falls from 349 mm to 323 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- Balikpapan in DecemberIndonesia · 35 kmHigh 28.4°C · Low 24.1°C · 268 mm rain
- Loa Janan in DecemberIndonesia · 61 kmHigh 29.8°C · Low 23.5°C · 298 mm rain
- Samarinda in DecemberIndonesia · 72 kmHigh 29.7°C · Low 23.3°C · 315 mm rain
- Bontang in DecemberIndonesia · 150 kmHigh 29.1°C · Low 24.1°C · 248 mm rain
- Palangkaraya in DecemberIndonesia · 339 kmHigh 29.9°C · Low 23.3°C · 297 mm rain
- Martapura in DecemberIndonesia · 340 kmHigh 29.2°C · Low 23.5°C · 390 mm rain
- Banjarbaru in DecemberIndonesia · 344 kmHigh 29.1°C · Low 23.4°C · 390 mm rain
- Banjarmasin in DecemberIndonesia · 351 kmHigh 29.2°C · Low 23.8°C · 328 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.