Climate averages 1991–2020
Rantauprapat weather
in December.
A hot, very wet month: the coolest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Rantauprapat: daytime highs average 28.6°C and nights cool to about 22.5°C. By daytime temperature it is the coolest month of the year.
Expect about 323 mm of rain on roughly 29 days, which makes December a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 00 min on an average December day.
The nearest other city in this atlas is Tanjungbalai (96 km away). In December its highs average 28.4°C, about as warm as Rantauprapat, with 333 mm of rain.
Among the 200 cities listed in Indonesia, Rantauprapat ranks joint 105th of 200 for the warmest December highs and 94th of 200 for the driest December (rainfall, lowest first). The mean December high of those 200 cities is 28.4°C; Rantauprapat is 0.2°C warmer than that mean.
From December to January, average highs rise by 0.2°C to 28.8°C, and monthly rainfall falls from 323 mm to 231 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
Rantauprapat climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.8°C22.3°C | 22.3°C | 231 | 27.1 | 12.012 h |
| February | 29.5°C22.5°C | 22.5°C | 184 | 24.0 | 12.012 h |
| March | 30.0°C22.8°C | 22.8°C | 228 | 27.6 | 12.112 h |
| April | 30.1°C23.2°C | 23.2°C | 254 | 28.4 | 12.212 h |
| May | 30.3°C23.4°C | 23.4°C | 212 | 26.5 | 12.212 h |
| June | 30.5°C23.3°C | 23.3°C | 150 | 20.7 | 12.212 h |
| July | 30.7°C22.9°C | 22.9°C | 158 | 21.3 | 12.212 h |
| August | 30.6°C22.9°C | 22.9°C | 193 | 24.5 | 12.212 h |
| September | 30.1°C22.9°C | 22.9°C | 257 | 26.4 | 12.112 h |
| October | 29.6°C22.8°C | 22.8°C | 299 | 28.5 | 12.112 h |
| November | 28.9°C22.6°C | 22.6°C | 344 | 29.2 | 12.012 h |
| December, selected | 28.6°C22.5°C | 22.5°C | 323 | 28.9 | 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
- Tanjungbalai in DecemberIndonesia · 96 kmHigh 28.4°C · Low 23.9°C · 333 mm rain
- Kisaran in DecemberIndonesia · 101 kmHigh 28.5°C · Low 23.1°C · 298 mm rain
- Padangsidempuan in DecemberIndonesia · 102 kmHigh 27.6°C · Low 21.3°C · 335 mm rain
- Sibolga in DecemberIndonesia · 124 kmHigh 28.6°C · Low 22.8°C · 433 mm rain
- Pematangsiantar in DecemberIndonesia · 128 kmHigh 26.3°C · Low 20.5°C · 315 mm rain
- Tebingtinggi in DecemberIndonesia · 156 kmHigh 28.1°C · Low 23.1°C · 258 mm rain
- Dumai in DecemberIndonesia · 185 kmHigh 28.7°C · Low 23.4°C · 343 mm rain
- Kabanjahe in DecemberIndonesia · 186 kmHigh 23.7°C · Low 17.4°C · 298 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 Rantauprapat) is explained once on the Rantauprapat year overview and on the Sources, method and limits page.