Climate averages 1991–2020
Sibu weather
in December.
A hot, very wet month: one of the coolest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Sibu: daytime highs average 29.2°C and nights cool to about 23.0°C. By daytime temperature it is one of the coolest months of the year.
Expect about 344 mm of rain on roughly 29 days, which makes December a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 59 min on an average December day.
The nearest other city in this atlas is Bintulu (166 km away). In December its highs average 29.3°C, about as warm as Sibu, with 348 mm of rain.
Among the 72 cities listed in Malaysia, Sibu ranks joint 4th of 72 for the warmest December highs and 62nd of 72 for the driest December (rainfall, lowest first). The mean December high of those 72 cities is 28.5°C; Sibu is 0.7°C warmer than that mean.
From December to January, average highs rise by 0.1°C to 29.2°C, and monthly rainfall falls from 344 mm to 312 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
Sibu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.2°C22.9°C | 22.9°C | 312 | 27.8 | 12.012 h |
| February | 29.6°C23.0°C | 23.0°C | 243 | 24.1 | 12.012 h |
| March | 30.2°C23.3°C | 23.3°C | 227 | 26.0 | 12.112 h |
| April | 30.5°C23.6°C | 23.6°C | 230 | 26.8 | 12.212 h |
| May | 30.5°C23.9°C | 23.9°C | 218 | 25.8 | 12.212 h |
| June | 30.4°C23.7°C | 23.7°C | 177 | 21.2 | 12.312 h |
| July | 30.3°C23.5°C | 23.5°C | 174 | 20.7 | 12.212 h |
| August | 30.5°C23.5°C | 23.5°C | 192 | 21.2 | 12.212 h |
| September | 30.3°C23.4°C | 23.4°C | 242 | 24.6 | 12.112 h |
| October | 29.9°C23.3°C | 23.3°C | 280 | 28.0 | 12.112 h |
| November | 29.5°C23.2°C | 23.2°C | 307 | 28.7 | 12.012 h |
| December, selected | 29.2°C23.0°C | 23.0°C | 344 | 29.0 | 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
- Bintulu in DecemberMalaysia · 166 kmHigh 29.3°C · Low 23.3°C · 348 mm rain
- Kuching in DecemberMalaysia · 185 kmHigh 28.8°C · Low 23.6°C · 423 mm rain
- Sintang in DecemberIndonesia · 251 kmHigh 29.7°C · Low 23.2°C · 267 mm rain
- Miri in DecemberMalaysia · 336 kmHigh 28.4°C · Low 24.2°C · 293 mm rain
- Marudi in DecemberMalaysia · 348 kmHigh 29.8°C · Low 23.1°C · 312 mm rain
- Singkawang in DecemberIndonesia · 351 kmHigh 28.2°C · Low 24.0°C · 399 mm rain
- Pontianak in DecemberIndonesia · 379 kmHigh 28.7°C · Low 23.5°C · 364 mm rain
- Bandar Seri Begawan in DecemberBrunei · 451 kmHigh 28.9°C · Low 24.0°C · 222 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 Sibu) is explained once on the Sibu year overview and on the Sources, method and limits page.