Nagano Weather in May
What's the weather like in Nagano (Nagano) in May 2025?
The climate in Nagano during May can be summarized as mild and a little damp.
May is in the spring in Nagano and is typically the 5th warmest month of the year. Daytime maximum temperatures average around 21°C (70°F), whilst at night 9°C (48°F) is normal.
| Daytime temperature | 21.3°C 70.3°F |
|---|---|
| Nightly temperature | 8.8°C 47.8°F |
| Average temperature | 15°C 59°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 90 mm 3.5 ins |
| Rainy days | 16 days |
| Sea temperature | 15.6°C 60°F |
| Humidity | 67% |
| Windspeed | 9kph 6 mph |
On average May is the 5th wettest month of the year in Nagano with around 90mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 16 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 Nagano
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 Nagano in May 2025.
Other monthly averages
Nagano weather stats
| Hottest month: | August | 29°C 84.2°F |
|---|---|---|
| Driest month: | December | 45mm 1.8ins |
| Sunniest month: | March | 6hrs |
| Coldest month: | January | 2.7°C 36.9°F |
| Wettest month: | July | 169mm 6.7ins |
© Google
Top Japan locations
- Fukuoka
- Hakodate
- Hakone
- Hiroshima
- Kagoshima
- Kamakura
- Kanazawa
- Kōbe
- Kyoto
- Nagoya
- Naha
- Nara
- Nikkō
- Ōsaka
- Sapporo
- Sendai
- Takayama
- Tokyo
- Yokohama