The climate in Izumi during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in Izumi and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (81°F), whilst at night 20°C (68°F) is normal.
|Daytime temperature||27.3°C 81.1°F|
|Nightly temperature||19.7°C 67.5°F|
|Average temperature||23.5°C 74.3°F|
|Daily sunshine||5.2 hrs|
|Avg rainfall||217 mm 8.5 ins|
|Rainy days||17 days|
|Sea temperature||26.4°C 79.5°F|
|Windspeed||10.4kph 7 mph|
On average September is the 2nd wettest month of the year in Izumi with around 217mm 8.5 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 5.2 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 Izumi in September 2021.
|Hottest month:||August||31.1°C 88°F|
|Driest month:||December||38mm 1.5ins|
|Coldest month:||January||8.1°C 46.6°F|
|Wettest month:||June||242mm 9.5ins|