Bangkok
September
Weather in Bangkok for September 2025
Your guide to Bangkok weather in September - trends and predictions
In general, the average temperature in Bangkok at the beginning of September is 32 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 30.3 °C by the end of September.
Bangkok experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 245.3 mm.
Is September a good time to visit Bangkok? check out the best time to travel to Bangkok page.
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Temperatures
Rain 🌧️
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0
Dry days
30
Rainy days
0
Snow days
31°/25°
Temperatures
14 km/h
Avg max wind
76 %
Avg humidity
Bangkok Weather September
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Temperatures trend during September in Bangkok
See the weather trend as well as the moving average line
September weather in Bangkok day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Moderate or heavy rain shower | 33° /25° | 11.3 mm | 7 | |
| 2 Sept. | Moderate or heavy rain shower | 33° /25° | 13.7 mm | 7 | |
| 3 Sept. |  Heavy rain at times | 32° /25° | 6.1 mm | 7 | |
| 4 Sept. | Moderate rain at times | 32° /24° | 5.5 mm | 7 | |
| 5 Sept. |  Patchy rain possible | 30° /24° | 7.8 mm | 7 | |
| 6 Sept. | Patchy rain possible | 33° /25° | 4.2 mm | 7 | |
| 7 Sept. | Moderate or heavy rain shower | 31° /24° | 9.5 mm | 7 | |
| 8 Sept. | Moderate or heavy rain shower | 30° /24° | 20.5 mm | 7 | |
| 9 Sept. | Patchy rain possible | 31° /24° | 7.1 mm | 7 | |
| 10 Sept. | Patchy rain possible | 32° /25° | 4.9 mm | 7 | |
| 11 Sept. | Moderate rain at times | 31° /25° | 2.9 mm | 7 | |
| 12 Sept. |  Overcast | 30° /24° | 2.8 mm | 7 | |
| 13 Sept. | Moderate or heavy rain shower | 31° /24° | 8.8 mm | 7 | |
| 14 Sept. | Moderate or heavy rain shower | 32° /25° | 8.2 mm | 7 | |
| 15 Sept. | Heavy rain at times | 31° /24° | 3.3 mm | 7 | |
| 16 Sept. | Heavy rain at times | 31° /24° | 3.6 mm | 7 | |
| 17 Sept. | Patchy rain possible | 32° /25° | 3.1 mm | 7 | |
| 18 Sept. | Moderate or heavy rain shower | 31° /25° | 6 mm | 7 | |
| 19 Sept. | Moderate or heavy rain shower | 31° /25° | 8.6 mm | 7 | |
| 20 Sept. | Moderate or heavy rain shower | 31° /24° | 8.2 mm | 7 | |
| 21 Sept. | Moderate or heavy rain shower | 32° /25° | 10.7 mm | 7 | |
| 22 Sept. | Light rain shower | 32° /25° | 7 mm | 7 | |
| 23 Sept. | Light rain shower | 31° /25° | 11 mm | 7 | |
| 24 Sept. | Moderate or heavy rain shower | 31° /25° | 12.6 mm | 7 | |
| 25 Sept. | Moderate or heavy rain shower | 29° /24° | 16.1 mm | 7 | |
| 26 Sept. | Moderate or heavy rain shower | 30° /24° | 11.9 mm | 7 | |
| 27 Sept. | Moderate or heavy rain shower | 30° /24° | 8 mm | 7 | |
| 28 Sept. | Patchy rain possible | 30° /24° | 4.3 mm | 7 | |
| 29 Sept. | Patchy rain possible | 30° /25° | 10.7 mm | 7 | |
| 30 Sept. | Heavy rain at times | 32° /25° | 6.6 mm | 7 | |
| Next | |||||
Important Notice
Our weather forecast for Bangkok 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 Bangkok forecast closer to your planned date for the most up-to-date weather information.
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Bangkok in September - FAQ
What are the expected maximum and minimum temperatures in Bangkok during September?
During September, expect a variety of temperatures with highs around 31° and lows near 25°, suitable for diverse activities and preferences.
How much rainfall should be expected in Bangkok during September?
Significant rainfall exceeding 245.3 mm is expected in Bangkok during September, occurring over more than 30 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Bangkok during September?
The average wind speed in Bangkok during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Bangkok in September?
As you prepare for your trip to Bangkok 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 Bangkok, 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
- Insect Repellent: For destinations with mosquitos or other insects
September rainfall patterns in Bangkok
Explore the daily rainfall trends and prepare for Bangkoks September weather 💧
UV exposure in Bangkok during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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