Hachiōji Weather in May
What's the weather like in Hachiōji (Tōkyō) in May 2025?
The climate in Hachiōji during May can be summarized as mild and wet.
May is in the spring in Hachiōji and is typically the 5th warmest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 12°C (53°F) is normal.
| Daytime temperature | 22°C 71.5°F |
|---|---|
| Nightly temperature | 11.9°C 53.3°F |
| Average temperature | 16.9°C 62.4°F |
| Daily sunshine | 6.3 hrs |
| Avg rainfall | 139 mm 5.5 ins |
| Rainy days | 15 days |
| Sea temperature | 19.9°C 67.8°F |
| Humidity | 71% |
| Windspeed | 9.4kph 6 mph |
On average May is the 6th wettest month of the year in Hachiōji with around 139mm 5.5 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 6.3 hours of sunshine per day.
May temperatures in Hachiōji
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 Hachiōji in May 2025.
Other monthly averages
Hachiōji weather stats
| Hottest month: | August | 29.4°C 84.9°F |
|---|---|---|
| Driest month: | December | 38mm 1.5ins |
| Sunniest month: | January | 6.6hrs |
| Coldest month: | January | 8.1°C 46.6°F |
| Wettest month: | September | 207mm 8.1ins |
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