The climate in Ban Laharn Sai during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in Ban Laharn Sai 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 (74°F) is normal.
Daytime temperature | 31.5°C 88.6°F |
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Nightly temperature | 23.2°C 73.7°F |
Average temperature | 27.3°C 81.1°F |
Daily sunshine | 6 hrs |
Avg rainfall | 242 mm 9.5 ins |
Rainy days | 19 days |
Sea temperature | 28.9°C 84°F |
Humidity | 83% |
Windspeed | 3.2kph 2 mph |
On average September is the wettest month of the year in Ban Laharn Sai with around 242mm 9.5 inches of rain making it a very wet time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 6 hours of sunshine per day.
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 Ban Laharn Sai in September 2025.
Best places to visit in September
Hottest month: | April | 35.5°C 95.9°F |
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Driest month: | December | 3mm 0.1ins |
Sunniest month: | December | 10.2hrs |
Coldest month: | December | 29.1°C 84.4°F |
Wettest month: | September | 242mm 9.5ins |