Brunei Darussalam (Bandar Seri Begawan)
September
Weather in Brunei Darussalam for September 2025
Your guide to Brunei Darussalam weather in September - trends and predictions
In general, the average temperature in Brunei Darussalam at the beginning of September is 30.7 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 29.9 °C by the end of September.
Brunei Darussalam experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 376.7 mm.
Temperatures
Rain 🌧️
1
Dry days
29
Rainy days
0
Snow days
29°/24°
Temperatures
14 km/h
Avg max wind
81 %
Avg humidity
Brunei Darussalam in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  31° | 2 30° | 3  31° | 4  31° | 5 31° | 6 31° | 7 30° |
| 8 28° | 9 30° | 10 31° | 11 29° | 12  28° | 13  29° | 14  30° |
| 15 30° | 16 29° | 17 28° | 18 29° | 19 29° | 20 30° | 21 28° |
| 22 28° | 23 30° | 24 30° | 25  30° | 26 29° | 27 30° | 28 30° |
| 29 30° | 30 30° |
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Temperatures trend during September in Brunei Darussalam
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Light rain shower | 31° /24° | 18.9 mm | 7 | |
| 2 Sept. | Patchy rain possible | 30° /24° | 10.1 mm | 8 | |
| 3 Sept. | Moderate or heavy rain shower | 31° /25° | 11.8 mm | 7 | |
| 4 Sept. | Sunny | 31° /25° | 5.2 mm | 8 | |
| 5 Sept. | Patchy rain possible | 31° /25° | 1.8 mm | 7 | |
| 6 Sept. | Moderate or heavy rain shower | 31° /25° | 15.4 mm | 8 | |
| 7 Sept. | Moderate or heavy rain shower | 30° /24° | 27.6 mm | 7 | |
| 8 Sept. | Light rain shower | 28° /24° | 19.5 mm | 7 | |
| 9 Sept. | Patchy rain possible | 30° /25° | 10.6 mm | 7 | |
| 10 Sept. | Moderate or heavy rain shower | 31° /25° | 22.4 mm | 7 | |
| 11 Sept. | Light rain shower | 29° /23° | 34.1 mm | 7 | |
| 12 Sept. | Mist | 28° /23° | 0.2 mm | 7 | |
| 13 Sept. | Partly cloudy | 29° /24° | 8.5 mm | 7 | |
| 14 Sept. | Cloudy | 30° /24° | 3.5 mm | 7 | |
| 15 Sept. | Cloudy | 30° /24° | 8.1 mm | 7 | |
| 16 Sept. | Light rain shower | 29° /24° | 6.4 mm | 6 | |
| 17 Sept. | Light rain shower | 28° /24° | 10.6 mm | 6 | |
| 18 Sept. | Light rain shower | 29° /24° | 31.8 mm | 6 | |
| 19 Sept. | Moderate or heavy rain shower | 29° /23° | 21.5 mm | 7 | |
| 20 Sept. | Patchy rain possible | 30° /24° | 7 mm | 7 | |
| 21 Sept. | Light rain shower | 28° /24° | 20.4 mm | 6 | |
| 22 Sept. | Light rain shower | 28° /25° | 11.3 mm | 7 | |
| 23 Sept. | Patchy rain possible | 30° /24° | 14.8 mm | 7 | |
| 24 Sept. | Patchy rain possible | 30° /24° | 6 mm | 7 | |
| 25 Sept. | Patchy light drizzle | 30° /24° | 17.7 mm | 7 | |
| 26 Sept. | Light rain shower | 29° /24° | 4 mm | 7 | |
| 27 Sept. | Light rain shower | 30° /24° | 6.6 mm | 7 | |
| 28 Sept. | Patchy rain possible | 30° /24° | 2.1 mm | 7 | |
| 29 Sept. | Light rain shower | 30° /25° | 7.2 mm | 7 | |
| 30 Sept. | Light rain shower | 30° /24° | 11.7 mm | 7 | |
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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.
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 376.7 mm is expected in Brunei Darussalam during September, occurring over more than 29 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 💧
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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