Brunei Darussalam (Bandar Seri Begawan)
September
Weather in Brunei Darussalam for September 2026
Your guide to Brunei Darussalam weather in September - trends and predictions
Until now, September 2026 in Brunei Darussalam has been nearly identical to the historical average, with a temperature of 30.6 °C (showing only a slight deviation of 0.4 °C).
The forecast for the next days in Brunei Darussalam predicts temperatures to be around 30 °C, close to the historical average.
In general, the average temperature in Brunei Darussalam at the beginning of September is 30.6 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 28.1 °C by the end of September.
Brunei Darussalam experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 398.1 mm.
Temperatures
Rain 🌧️
5
Dry days
25
Rainy days
0
Snow days
29°/24°
Temperatures
14 km/h
Avg max wind
81 %
Avg humidity
Brunei Darussalam Weather September
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What’s the Weather Like in Brunei Darussalam This September?
Discover the average temperatures and weather trends across Brunei Darussalam’s cities this September.
Temperatures trend during September in Brunei Darussalam
See the weather trend as well as the moving average line
September weather in Brunei Darussalam day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 30° /24° | 12.1 mm | 6 | |
| 2 Sept. | Patchy rain possible | 31° /24° | 6.3 mm | 7 | |
| 3 Sept. |  Moderate or heavy rain shower | 31° /24° | 6.1 mm | 8 | |
| 4 Sept. |  Sunny | 31° /24° | 3.7 mm | 9 | |
| 5 Sept. | Patchy rain possible | 30° /24° | 9.3 mm | 7 | |
| 6 Sept. | Moderate or heavy rain shower | 31° /24° | 20.9 mm | 6 | |
| 7 Sept. | Moderate or heavy rain shower | 30° /24° | 25.7 mm | 5 | |
| 8 Sept. | Light rain shower | 29° /24° | 16.6 mm | 7 | |
| 9 Sept. | Moderate or heavy rain shower | 30° /24° | 14.1 mm | 5 | |
| 10 Sept. | Moderate or heavy rain shower | 30° /24° | 21.8 mm | 6 | |
| 11 Sept. | Light rain shower | 30° /24° | 24 mm | 5 | |
| 12 Sept. |  Mist | 29° /23° | 2.7 mm | 6 | |
| 13 Sept. |  Partly cloudy | 29° /23° | 9.8 mm | 6 | |
| 14 Sept. | Patchy rain possible | 31° /26° | 0.7 mm | 12.6 | |
| 15 Sept. | Light rain shower | 30° /27° | 9.9 mm | 12.6 | |
| 16 Sept. | Light rain shower | 30° /26° | 8.1 mm | 12.4 | |
| 17 Sept. | Light rain shower | 31° /25° | 4.7 mm | 12 | |
| 18 Sept. | Patchy rain possible | 31° /25° | 5.5 mm | 8 | |
| 19 Sept. | Patchy rain possible | 30° /25° | 1.8 mm | 7 | |
| 20 Sept. |  Overcast | 29° /25° | 1.7 mm | 6 | |
| 21 Sept. | Overcast | 31° /25° | 3.9 mm | 7 | |
| 22 Sept. | Light rain shower | 32° /25° | 15.3 mm | 7 | |
| 23 Sept. | Light rain shower | 31° /25° | 26.3 mm | 7 | |
| 24 Sept. | Light rain shower | 28° /25° | 18.9 mm | 6 | |
| 25 Sept. | Light rain shower | 28° /25° | 22.1 mm | 6 | |
| 26 Sept. | Patchy rain possible | 25° /24° | 4.6 mm | 6 | |
| 27 Sept. | Overcast | 26° /24° | 4 mm | 6 | |
| 28 Sept. | Patchy rain possible | 30° /24° | 1.7 mm | 7 | |
| 29 Sept. | Light rain shower | 30° /25° | 9.6 mm | 6 | |
| 30 Sept. | Light rain shower | 30° /24° | 15.5 mm | 6 | |
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Important Notice
Our weather forecast for Brunei Darussalam in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Brunei Darussalam forecast closer to your planned date for the most up-to-date weather information.
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Brunei Darussalam in September - FAQ
What are the expected maximum and minimum temperatures in Brunei Darussalam during September?
During September, expect a variety of temperatures with highs around 29° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Brunei Darussalam during September?
Significant rainfall exceeding 398.1 mm is expected in Brunei Darussalam during September, occurring over more than 25 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Brunei Darussalam during September?
The average wind speed in Brunei Darussalam during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Brunei Darussalam
Explore the daily rainfall trends and prepare for Brunei Darussalams September weather 💧
Typically, Brunei Darussalam has 25 rainy days in September with a total of 398.1 mm of rainfall.
UV exposure in Brunei Darussalam during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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