Bang Sao Thong Weather in September
What's the weather like in Bang Sao Thong (Samut Prakan) in September 2025?
The climate in Bang Sao Thong during September can be summarized as very hot, humid and very wet.
September is in the fall / autumn in Bang Sao Thong and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a steamy 32°C (90°F), whilst at night 25°C (77°F) is normal.
| Daytime temperature | 32.1°C 89.7°F |
|---|---|
| Nightly temperature | 24.8°C 76.6°F |
| Average temperature | 28.4°C 83.1°F |
| Daily sunshine | 5.5 hrs |
| Avg rainfall | 299 mm 11.8 ins |
| Rainy days | 20 days |
| Sea temperature | 29°C 84.2°F |
| Humidity | 80% |
| Windspeed | 5.4kph 3 mph |
On average September is the wettest month of the year in Bang Sao Thong with around 299mm 11.8 inches of rain making it a very wet time to visit. This rainfall is typically spread over 20 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.5 hours of sunshine per day.
September temperatures in Bang Sao Thong
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Bang Sao Thong in September 2025.
Other monthly averages
Best places to visit in September
Bang Sao Thong weather stats
| Hottest month: | April | 34.4°C 93.9°F |
|---|---|---|
| Driest month: | January | 8mm 0.3ins |
| Sunniest month: | January | 9.3hrs |
| Coldest month: | December | 31.2°C 88.2°F |
| Wettest month: | September | 299mm 11.8ins |
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