Kosai Weather in January
What's the weather like in Kosai (Shizuoka) in January 2025?
The climate in Kosai during January can be summarized as cool and reasonably dry.
January is in the winter in Kosai and is typically the coldest month of the year. Daytime maximum temperatures average around a cool 10°C (49°F), whilst at night 2°C (35°F) is normal.
| Daytime temperature | 9.5°C 49°F |
|---|---|
| Nightly temperature | 1.6°C 34.8°F |
| Average temperature | 5.5°C 41.9°F |
| Daily sunshine | 6.6 hrs |
| Avg rainfall | 53 mm 2.1 ins |
| Rainy days | 11 days |
| Sea temperature | 17.8°C 64°F |
| Humidity | 60% |
| Windspeed | 15.1kph 9 mph |
On average January is the 2nd driest month of the year in Kosai with around 53mm 2.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.6 hours of sunshine per day.
January temperatures in Kosai
January rainfall
January 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 January 2024.
Other monthly averages
Best places to visit in January
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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