Climate averages 1991–2020
Bontang weather
in January.
A hot, very wet month: one of the coolest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Bontang: daytime highs average 28.9°C and nights cool to about 24.1°C. By daytime temperature it is one of the coolest months of the year.
Expect about 205 mm of rain on roughly 25 days, which makes January a very wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 07 min on an average January day.
The nearest other city in this atlas is Samarinda (79 km away). In January its highs average 29.6°C, 0.7°C warmer than Bontang, with 279 mm of rain.
Among the 200 cities listed in Indonesia, Bontang ranks joint 51st of 200 for the warmest January highs and 17th of 200 for the driest January (rainfall, lowest first). The mean January high of those 200 cities is 28.2°C; Bontang is 0.7°C warmer than that mean.
From January to February, average highs rise by 0.2°C to 29.1°C, and monthly rainfall falls from 205 mm to 164 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
Bontang climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 28.9°C24.1°C | 24.1°C | 205 | 25.2 | 12.112 h |
| February | 29.1°C24.2°C | 24.2°C | 164 | 22.1 | 12.112 h |
| March | 29.3°C24.3°C | 24.3°C | 206 | 25.3 | 12.112 h |
| April | 29.4°C24.4°C | 24.4°C | 214 | 26.5 | 12.112 h |
| May | 29.3°C24.6°C | 24.6°C | 197 | 27.0 | 12.112 h |
| June | 29.0°C24.4°C | 24.4°C | 177 | 24.8 | 12.112 h |
| July | 28.9°C24.2°C | 24.2°C | 150 | 22.3 | 12.112 h |
| August | 29.2°C24.3°C | 24.3°C | 124 | 19.9 | 12.112 h |
| September | 29.6°C24.4°C | 24.4°C | 130 | 20.4 | 12.112 h |
| October | 29.6°C24.4°C | 24.4°C | 176 | 25.3 | 12.112 h |
| November | 29.2°C24.2°C | 24.2°C | 220 | 28.3 | 12.112 h |
| December | 29.1°C24.1°C | 24.1°C | 248 | 28.9 | 12.112 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
- Samarinda in JanuaryIndonesia · 79 kmHigh 29.6°C · Low 23.2°C · 279 mm rain
- Loa Janan in JanuaryIndonesia · 91 kmHigh 29.8°C · Low 23.3°C · 277 mm rain
- Nusantara in JanuaryIndonesia · 150 kmHigh 29.5°C · Low 23.3°C · 323 mm rain
- Balikpapan in JanuaryIndonesia · 172 kmHigh 28.3°C · Low 23.9°C · 258 mm rain
- Tarakan in JanuaryIndonesia · 354 kmHigh 27.5°C · Low 24.6°C · 263 mm rain
- Toli-Toli in JanuaryIndonesia · 384 kmHigh 25.9°C · Low 21.1°C · 174 mm rain
- Majene in JanuaryIndonesia · 440 kmHigh 28.1°C · Low 25.3°C · 165 mm rain
- Tawau in JanuaryMalaysia · 459 kmHigh 28.9°C · Low 24.1°C · 156 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 Bontang) is explained once on the Bontang year overview and on the Sources, method and limits page.