Sanjō Weather in May
What's the weather like in Sanjō (Niigata) in May 2025?
The climate in Sanjō during May can be summarized as mild and a little damp.
May is in the spring in Sanjō and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a comfortable 21°C (71°F), whilst at night 12°C (53°F) is normal.
| Daytime temperature | 21.4°C 70.5°F |
|---|---|
| Nightly temperature | 11.6°C 52.9°F |
| Average temperature | 16.5°C 61.7°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 95 mm 3.7 ins |
| Rainy days | 17 days |
| Sea temperature | 13.7°C 56.7°F |
| Humidity | 70% |
| Windspeed | 9.4kph 6 mph |
On average May is the 2nd driest month of the year in Sanjō with around 95mm 3.7 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
May temperatures in Sanjō
May rainfall
May 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 Sanjō in May 2025.
Other monthly averages
Sanjō weather stats
| Hottest month: | August | 30.7°C 87.3°F |
|---|---|---|
| Driest month: | April | 88mm 3.5ins |
| Sunniest month: | August | 6.9hrs |
| Coldest month: | January | 5.4°C 41.7°F |
| Wettest month: | December | 223mm 8.8ins |
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