Average temperature in September is 27.2 °C
Average daytime temperature is 29.6 °C
Average night temperature is 24.9 °C
Absolute maximum temperature: 31.7 °C
Absolute minimum temperature: 23.9 °C
Number of sunny days: 4
Number of rainy days: 26
Number of snow days:
Precipitation sum: 219 mm
* Weather data for Kuala Belait Brunei is based on climate observations for 2023 year
| September (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 29.9 | 30.8 | 31.7 | 30.6 | 30.4 | 28.2 | 29.3 | 29.3 | 29.9 | 30.2 | 29.5 | 30 | 29.7 | 30.9 | 30.1 | 29.9 | 29.5 | 27 | 28.7 | 29 | 28.8 | 28 | 27.1 | 30.9 | 31.3 | 28.9 | 29.9 | 30 | 29.9 | 29.4 |
| Apparent max temperature | 36 | 35.8 | 37.4 | 38.2 | 36.6 | 33.8 | 35.6 | 34.6 | 36 | 37.5 | 35.7 | 35.4 | 36.3 | 37 | 36.8 | 35.9 | 36 | 32.4 | 34.4 | 36.1 | 34.2 | 32.7 | 33.1 | 37.6 | 38.4 | 35.5 | 36.5 | 36.9 | 37.1 | 32.9 |
| Mean temperature | 27 | 27.9 | 28.7 | 28.7 | 28.3 | 26 | 26 | 27.4 | 26.9 | 27.1 | 26.1 | 27.2 | 27.7 | 27.8 | 28 | 28.4 | 27.2 | 25.4 | 27 | 26.7 | 25.9 | 25.9 | 25.9 | 27.9 | 28 | 26.1 | 28 | 28.3 | 27.5 | 26.3 |
| Apparent mean temperature | 28.8 | 29.8 | 31.3 | 31.1 | 30.7 | 27.5 | 28.7 | 28.9 | 29.3 | 28 | 28 | 29 | 30.1 | 30.4 | 30.7 | 30.6 | 28 | 29.3 | 30.3 | 30.3 | 28.4 | 28.5 | 28.8 | 28.5 | 30.9 | 29.9 | 31.8 | 31.5 | 28.9 | 27.3 |
| Minimum temperature | 24.6 | 25 | 25.8 | 26 | 25.4 | 24 | 24.5 | 25.1 | 24.7 | 24.1 | 23.9 | 24.9 | 25.1 | 25.1 | 26 | 25.7 | 24.1 | 24.7 | 25 | 25.2 | 24.4 | 24.2 | 24.6 | 24.5 | 25 | 24.7 | 25.8 | 26 | 24.8 | 24.1 |
| Apparent min temperature | 32.3 | 33 | 34.1 | 34.7 | 33.9 | 30.5 | 30.7 | 32.2 | 32.3 | 32.7 | 30.3 | 32.6 | 33.2 | 33.7 | 33.5 | 33.3 | 32 | 30.3 | 32.3 | 32.3 | 30.5 | 30.4 | 31.1 | 33.3 | 34.2 | 31.4 | 34 | 34 | 33.3 | 30.3 |
| September | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 |
| Sunshine duration (h) | 10.1 | 11 | 11 | 11.1 | 10.9 | 10 | 8.2 | 8.1 | 8.1 | 10 | 5.9 | 8.1 | 8.4 | 10.1 | 11 | 10.3 | 11 | 2.8 | 7 | 8.6 | 5 | 2.4 | 0 | 11 | 10.5 | 4.2 | 8.8 | 11.1 | 7.3 | 3.7 |
| Precipitation (mm) | 5.8 | 2.9 | 0 | 0.2 | 0.6 | 29.3 | 6.1 | 0.8 | 1.9 | 2.3 | 15.6 | 0 | 1.4 | 2.7 | 6.8 | 0 | 11.8 | 33.9 | 3.3 | 2 | 40.6 | 14.5 | 0.8 | 5.2 | 2.4 | 8.5 | 0 | 1 | 9.2 | 9.9 |
| Precipitation hours | 11 | 3 | 0 | 2 | 3 | 18 | 19 | 3 | 8 | 8 | 14 | 0 | 2 | 4 | 9 | 0 | 9 | 19 | 11 | 5 | 22 | 19 | 4 | 6 | 3 | 11 | 0 | 2 | 10 | 12 |
| Wind speed (m/s) | 17.8 | 18.4 | 18.5 | 11.5 | 12.6 | 16.2 | 15 | 12.5 | 15.2 | 15.5 | 16.3 | 13.6 | 13.7 | 14.5 | 11.9 | 11.7 | 13 | 13.5 | 14.6 | 12 | 18.6 | 14.5 | 13.1 | 17.4 | 13.2 | 11.6 | 12.6 | 14.2 | 15.7 | 19.4 |
In September 2023, the highest daytime temperature in Kuala Belait was 31.7°C.
While the minimum temperature at night dropped to 23.9°C.
The average nighttime and daytime temperatures during September in Kuala Belait are 24.9°C and 29.6°C respectively.
The precipitation sum in September is about 219 mm.