Bandar Seri Begawan
September
Weather in Bandar Seri Begawan for September 2025
Your guide to Bandar Seri Begawan weather in September - trends and predictions
In general, the average temperature in Bandar Seri Begawan 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.
Bandar Seri Begawan experiences an exceptionally high level of rainfall in September, with more than 24 rainy days on average.
Is September a good time to visit Bandar Seri Begawan? check out the best time to travel to Bandar Seri Begawan page.
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5
Dry days
25
Rainy days
0
Snow days
29°/24°
Temperatures
13 km/h
Avg max wind
81 %
Avg humidity
Bandar Seri Begawan 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 Bandar Seri Begawan
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 Bandar Seri Begawan 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 Bandar Seri Begawan forecast closer to your planned date for the most up-to-date weather information.
Bandar Seri Begawan in September - FAQ
What are the expected maximum and minimum temperatures in Bandar Seri Begawan 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 Bandar Seri Begawan during September?
Significant rainfall exceeding 421.3 mm is expected in Bandar Seri Begawan during September, occurring over more than 25 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Bandar Seri Begawan during September?
The average wind speed in Bandar Seri Begawan during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Bandar Seri Begawan in September?
As you prepare for your trip to Bandar Seri Begawan in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Bandar Seri Begawan, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Sandals/Flip-flops: Comfortable for warm climates
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
September rainfall patterns in Bandar Seri Begawan
Explore the daily rainfall trends and prepare for Bandar Seri Begawans September weather 💧
UV exposure in Bandar Seri Begawan during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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