Oyama Weather in September

What's the weather like in Oyama, Japan in September?

The climate in Oyama during September can be summarized as warm, humid and wet.

September is in the fall / autumn in Oyama and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 26°C (79°F), whilst at night 19°C (65°F) is normal.

Oyama weather averages (imperial / metric)
Daytime temperature 26.2°C 79.1°F
Nightly temperature 18.5°C 65.2°F
Average temperature 22.3°C 72.1°F
Daily sunshine 4.1 hrs
Avg rainfall 184 mm 7.3 ins
Rainy days 20 days
Sea temperature 25°C 77°F
Humidity 79%
Windspeed 7.2kph 5 mph

On average September is the wettest month of the year in Oyama with around 184mm 7.3 inches of rain making it a wet time to visit. This rainfall is typically spread over 20 days, although this may vary considerably.

On the flip side this corresponds to an average of 4.1 hours of sunshine per day.

September temperatures in Oyama

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 September 2018.

Other monthly averages

Oyama weather stats

Oyama weather statistics
Hottest month: August 30.7°C 87.3°F
Driest month: January 29mm 1.1ins
Sunniest month: January 6.8hrs
Coldest month: January 8.5°C 47.3°F
Wettest month: September 184mm 7.2ins
Map showing location of Oyama (36.3, 139.8)

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