Khok Si Suphan Weather in September
What's the weather like in Khok Si Suphan (Sakon Nakhon) in September 2025?
The climate in Khok Si Suphan during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in Khok Si Suphan and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (88°F), whilst at night 24°C (75°F) is normal.
| Daytime temperature | 31.1°C 88°F |
|---|---|
| Nightly temperature | 23.7°C 74.7°F |
| Average temperature | 27.4°C 81.3°F |
| Daily sunshine | 6 hrs |
| Avg rainfall | 239 mm 9.4 ins |
| Rainy days | 18 days |
| Sea temperature | 29.2°C 84.5°F |
| Humidity | 82% |
| Windspeed | 4kph 2 mph |
On average September is the 4th wettest month of the year in Khok Si Suphan with around 239mm 9.4 inches of rain making it a very wet time to visit. This rainfall is typically spread over 18 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 Khok Si Suphan
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 Khok Si Suphan in September 2025.
Other monthly averages
Best places to visit in September
Khok Si Suphan weather stats
| Hottest month: | April | 34.5°C 94.1°F |
|---|---|---|
| Driest month: | December | 2mm 0.1ins |
| Sunniest month: | January | 9.6hrs |
| Coldest month: | December | 28.1°C 82.6°F |
| Wettest month: | August | 385mm 15.2ins |
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