Sinan Weather in September
What's the weather like in Sinan (South Jeolla) in September 2025?
The climate in Sinan during September can be summarized as warm, humid and wet.
September is in the fall / autumn in Sinan and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (80°F), whilst at night 18°C (65°F) is normal.
| Daytime temperature | 26.5°C 79.6°F |
|---|---|
| Nightly temperature | 18.2°C 64.7°F |
| Average temperature | 22.3°C 72.1°F |
| Daily sunshine | 7.2 hrs |
| Avg rainfall | 141 mm 5.5 ins |
| Rainy days | 9 days |
| Sea temperature | 24.7°C 76.4°F |
| Humidity | 78% |
| Windspeed | 8.6kph 5 mph |
On average September is the 4th wettest month of the year in Sinan with around 141mm 5.5 inches of rain making it a wet time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.2 hours of sunshine per day.
September temperatures in Sinan
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 Sinan in September 2025.
Other monthly averages
Best places to visit in September
Sinan weather stats
| Hottest month: | August | 30.1°C 86.2°F |
|---|---|---|
| Driest month: | December | 29mm 1.1ins |
| Sunniest month: | October | 7.4hrs |
| Coldest month: | January | 5.3°C 41.5°F |
| Wettest month: | July | 244mm 9.6ins |
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