Climate averages 1991–2020
Sibolga weather
in December.
A hot, very wet month: the 10th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Sibolga: daytime highs average 28.6°C and nights cool to about 22.8°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 433 mm of rain on roughly 28 days, which makes December a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 01 min on an average December day.
The nearest other city in this atlas is Padangsidempuan (68 km away). In December its highs average 27.6°C, 0.9°C cooler than Sibolga, with 335 mm of rain.
Among the 200 cities listed in Indonesia, Sibolga ranks joint 105th of 200 for the warmest December highs and joint 174th of 200 for the driest December (rainfall, lowest first). The mean December high of those 200 cities is 28.4°C; Sibolga is 0.2°C warmer than that mean.
From December to January, average highs rise by 0.7°C to 29.3°C, and monthly rainfall falls from 433 mm to 338 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
Sibolga climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.3°C22.9°C | 22.9°C | 338 | 26.7 | 12.012 h |
| February | 29.7°C23.0°C | 23.0°C | 313 | 23.9 | 12.112 h |
| March | 29.6°C23.1°C | 23.1°C | 361 | 27.4 | 12.112 h |
| April | 29.4°C23.4°C | 23.4°C | 357 | 26.7 | 12.212 h |
| May | 29.7°C23.8°C | 23.8°C | 260 | 21.6 | 12.212 h |
| June | 29.6°C23.6°C | 23.6°C | 159 | 17.3 | 12.212 h |
| July | 29.1°C23.2°C | 23.2°C | 193 | 19.1 | 12.212 h |
| August | 28.9°C23.0°C | 23.0°C | 284 | 22.8 | 12.212 h |
| September | 28.8°C23.0°C | 23.0°C | 293 | 23.2 | 12.112 h |
| October | 28.5°C22.8°C | 22.8°C | 427 | 26.1 | 12.112 h |
| November | 28.3°C22.7°C | 22.7°C | 507 | 27.6 | 12.012 h |
| December, selected | 28.6°C22.8°C | 22.8°C | 433 | 27.6 | 12.012 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
- Padangsidempuan in DecemberIndonesia · 68 kmHigh 27.6°C · Low 21.3°C · 335 mm rain
- Rantauprapat in DecemberIndonesia · 124 kmHigh 28.6°C · Low 22.5°C · 323 mm rain
- Gunungsitoli in DecemberIndonesia · 139 kmHigh 28.4°C · Low 24.0°C · 399 mm rain
- Pematangsiantar in DecemberIndonesia · 139 kmHigh 26.3°C · Low 20.5°C · 315 mm rain
- Subulussalam in DecemberIndonesia · 143 kmHigh 28.6°C · Low 21.1°C · 395 mm rain
- Kabanjahe in DecemberIndonesia · 155 kmHigh 23.7°C · Low 17.4°C · 298 mm rain
- Kisaran in DecemberIndonesia · 167 kmHigh 28.5°C · Low 23.1°C · 298 mm rain
- Tanjungbalai in DecemberIndonesia · 177 kmHigh 28.4°C · Low 23.9°C · 333 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 Sibolga) is explained once on the Sibolga year overview and on the Sources, method and limits page.