Climate averages 1991–2020
Bintulu weather
in September.
A hot, very wet month: the 6th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Bintulu: daytime highs average 30.4°C and nights cool to about 23.6°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 213 mm of rain on roughly 24 days, which makes September a very wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 08 min on an average September day.
The nearest other city in this atlas is Sibu (166 km away). In September its highs average 30.3°C, about as warm as Bintulu, with 242 mm of rain.
Among the 72 cities listed in Malaysia, Bintulu ranks 6th of 72 for the warmest September highs and 40th of 72 for the driest September (rainfall, lowest first). The mean September high of those 72 cities is 29.6°C; Bintulu is 0.8°C warmer than that mean.
From September to October, average highs fall by 0.6°C to 29.8°C, and monthly rainfall rises from 213 mm to 274 mm.
The annual picture
September 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
Bintulu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.1°C23.2°C | 23.2°C | 299 | 26.2 | 12.012 h |
| February | 29.4°C23.3°C | 23.3°C | 193 | 21.8 | 12.012 h |
| March | 30.1°C23.5°C | 23.5°C | 165 | 22.6 | 12.112 h |
| April | 30.5°C23.8°C | 23.8°C | 188 | 24.2 | 12.212 h |
| May | 30.7°C24.2°C | 24.2°C | 183 | 22.7 | 12.312 h |
| June | 30.6°C24.0°C | 24.0°C | 177 | 20.4 | 12.312 h |
| July | 30.5°C23.8°C | 23.8°C | 170 | 19.6 | 12.312 h |
| August | 30.7°C23.8°C | 23.8°C | 196 | 21.0 | 12.212 h |
| September, selected | 30.4°C23.6°C | 23.6°C | 213 | 23.8 | 12.112 h |
| October | 29.8°C23.4°C | 23.4°C | 274 | 27.3 | 12.012 h |
| November | 29.6°C23.3°C | 23.3°C | 291 | 28.4 | 12.012 h |
| December | 29.3°C23.3°C | 23.3°C | 348 | 28.7 | 11.912 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
September in nearby cities
- Sibu in SeptemberMalaysia · 166 kmHigh 30.3°C · Low 23.4°C · 242 mm rain
- Miri in SeptemberMalaysia · 173 kmHigh 29.2°C · Low 24.7°C · 195 mm rain
- Marudi in SeptemberMalaysia · 182 kmHigh 30.8°C · Low 23.3°C · 221 mm rain
- Bandar Seri Begawan in SeptemberBrunei · 285 kmHigh 29.9°C · Low 24.4°C · 196 mm rain
- Labuan in SeptemberMalaysia · 340 kmHigh 29.3°C · Low 25.2°C · 158 mm rain
- Kuching in SeptemberMalaysia · 350 kmHigh 30.2°C · Low 23.9°C · 257 mm rain
- Sintang in SeptemberIndonesia · 385 kmHigh 30.5°C · Low 23.4°C · 237 mm rain
- Keningau in SeptemberMalaysia · 422 kmHigh 29.9°C · Low 21.7°C · 122 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 Bintulu) is explained once on the Bintulu year overview and on the Sources, method and limits page.