Na Bon Weather in September
What's the weather like in Na Bon (Nakhon Si Thammarat) in September 2025?
The climate in Na Bon during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in Na Bon and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a steamy 32°C (89°F), whilst at night 23°C (73°F) is normal.
| Daytime temperature | 31.7°C 89.1°F |
|---|---|
| Nightly temperature | 22.9°C 73.2°F |
| Average temperature | 27.3°C 81.1°F |
| Daily sunshine | 6 hrs |
| Avg rainfall | 250 mm 9.8 ins |
| Rainy days | 20 days |
| Sea temperature | 29.3°C 84.7°F |
| Humidity | 82% |
| Windspeed | 5.8kph 4 mph |
On average September is the 3rd wettest month of the year in Na Bon with around 250mm 9.8 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 6 hours of sunshine per day.
September temperatures in Na Bon
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 Na Bon in September 2025.
Other monthly averages
Best places to visit in September
Na Bon weather stats
| Hottest month: | April | 33.7°C 92.7°F |
|---|---|---|
| Driest month: | February | 30mm 1.2ins |
| Sunniest month: | February | 9.1hrs |
| Coldest month: | December | 29.4°C 84.9°F |
| Wettest month: | November | 426mm 16.8ins |
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