The climate in Komatsushima during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in Komatsushima and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (80°F), whilst at night 20°C (68°F) is normal.
|Daytime temperature||26.8°C 80.2°F|
|Nightly temperature||20.2°C 68.4°F|
|Average temperature||23.5°C 74.3°F|
|Daily sunshine||5.6 hrs|
|Avg rainfall||295 mm 11.6 ins|
|Rainy days||17 days|
|Sea temperature||26.2°C 79.2°F|
|Windspeed||12.6kph 8 mph|
On average September is the wettest month of the year in Komatsushima with around 295mm 11.6 inches of rain making it a very wet time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.6 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 Komatsushima in September 2022.
|Hottest month:||August||30.2°C 86.4°F|
|Driest month:||December||43mm 1.7ins|
|Coldest month:||January||8.9°C 48°F|
|Wettest month:||September||295mm 11.6ins|