Iwanai Weather in March
What's the weather like in Iwanai (Hokkaidō) in March 2026?
The climate in Iwanai during March can be summarized as cold and a little damp.
March is in the spring in Iwanai and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a freezing 1°C (33°F), whilst at night -7°C (20°F) is normal.
| Daytime temperature | 0.8°C 33.4°F |
|---|---|
| Nightly temperature | -6.8°C 19.9°F |
| Average temperature | -3°C 26.6°F |
| Daily sunshine | 5 hrs |
| Avg rainfall | 88 mm 3.4 ins |
| Rainy days | 26 days |
| Sea temperature | 5.3°C 41.5°F |
| Humidity | 72% |
| Windspeed | 13.3kph 8 mph |
On average March is the 4th driest month of the year in Iwanai with around 88mm 3.4 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 26 days, although this may vary considerably.
On the flip side this corresponds to an average of 5 hours of sunshine per day.
March temperatures in Iwanai
March rainfall
March 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 Iwanai in March 2025.
Other monthly averages
Iwanai weather stats
| Hottest month: | August | 23.2°C 73.8°F |
|---|---|---|
| Driest month: | May | 74mm 2.9ins |
| Sunniest month: | April | 6.4hrs |
| Coldest month: | January | -4°C 24.8°F |
| Wettest month: | December | 164mm 6.5ins |
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