Soi Dao Weather in September
What's the weather like in Soi Dao (Chanthaburi) in September 2025?
The climate in Soi Dao during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in Soi Dao and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a steamy 30°C (86°F), whilst at night 22°C (72°F) is normal.
| Daytime temperature | 29.9°C 85.7°F |
|---|---|
| Nightly temperature | 22.4°C 72.2°F |
| Average temperature | 26.1°C 79°F |
| Daily sunshine | 5.1 hrs |
| Avg rainfall | 377 mm 14.8 ins |
| Rainy days | 21 days |
| Sea temperature | 29.1°C 84.4°F |
| Humidity | 85% |
| Windspeed | 4.3kph 3 mph |
On average September is the wettest month of the year in Soi Dao with around 377mm 14.8 inches of rain making it a very wet time to visit. This rainfall is typically spread over 21 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.1 hours of sunshine per day.
September temperatures in Soi Dao
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 Soi Dao in September 2025.
Other monthly averages
Best places to visit in September
Soi Dao weather stats
| Hottest month: | April | 33.1°C 91.6°F |
|---|---|---|
| Driest month: | December | 10mm 0.4ins |
| Sunniest month: | December | 9.5hrs |
| Coldest month: | December | 29.4°C 84.9°F |
| Wettest month: | September | 377mm 14.8ins |
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