Kosai Weather in September

What's the weather like in Kosai (Shizuoka) in September 2022?

The climate in Kosai during September can be summarized as hot, humid and very wet.

September is in the fall / autumn in Kosai 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 (69°F) is normal.

Kosai weather averages (imperial / metric)
Daytime temperature 27.4°C 81.3°F
Nightly temperature 20.4°C 68.7°F
Average temperature 23.9°C 75°F
Daily sunshine 5.4 hrs
Avg rainfall 207 mm 8.2 ins
Rainy days 18 days
Sea temperature 26.6°C 79.8°F
Humidity 77%
Windspeed 10.1kph 6 mph

On average September is the 3rd wettest month of the year in Kosai with around 207mm 8.2 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 5.4 hours of sunshine per day.

September temperatures in Kosai

Kosai average temperature in September

September rainfall

Kosai average rain in September

September hourly sunshine

Kosai average rain in September

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 Kosai in September 2022.

Other monthly averages

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UV index Best time to go?

Kosai weather stats

Kosai weather statistics
Hottest month: August 30.6°C 87.1°F
Driest month: December 51mm 2ins
Sunniest month: January 6.6hrs
Coldest month: January 9.3°C 48.7°F
Wettest month: June 255mm 10ins
Map showing location of Kosai (34.7184, 137.53175)

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