Kosai Weather in April
What's the weather like in Kosai (Shizuoka) in April 2025?
The climate in Kosai during April can be summarized as mild and wet.
April is in the spring in Kosai and is typically the 6th coldest month of the year. Daytime maximum temperatures average around 19°C (66°F), whilst at night 10°C (50°F) is normal.
| Daytime temperature | 18.8°C 65.8°F |
|---|---|
| Nightly temperature | 10.2°C 50.4°F |
| Average temperature | 14.5°C 58.1°F |
| Daily sunshine | 6.1 hrs |
| Avg rainfall | 173 mm 6.8 ins |
| Rainy days | 15 days |
| Sea temperature | 18.5°C 65.3°F |
| Humidity | 69% |
| Windspeed | 13kph 8 mph |
On average April is the 6th wettest month of the year in Kosai with around 173mm 6.8 inches of rain making it a wet time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.1 hours of sunshine per day.
April temperatures in Kosai
April rainfall
April 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 Kosai in April 2025.
Other monthly averages
Kosai weather stats
| 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 |
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