Weather in Japan in May
May in Japan is cool outdoor weather: usable if you dress for it, not a beach brief.
A country pin in May is a warning: one region of Japan will not match another. Use a city page if you already know where you are going. Compared with August and January, May sits in the middle of Japan's year.
- Average temp
- 17°C
11–24°C
- Rainfall
- 92 mm
Showers likely
- Sunshine
- 6.6 h
hours per day
What to expect
Daytime
Cool days in Japan: a jumper you can take off, a shell in the bag. Walking is fine. Lingering outside without a layer is optimism.
Mornings and evenings are colder than the postcard. Pack for both, especially if you leave the built-up centre.
Rain
Mixed skies in Japan in May. Dry days and wet days share the month. Outdoor plans need a backup, not a cancellation policy.
Pack a shell you will actually carry. The monthly table is the place for totals. This is the feel: usable, interrupted.
Evening
Evenings are cooler. A layer helps after sunset.
What to pack
Rain jacket
A layer for cooler evenings
Where to stay in Japan
Featured stays on trip1. Dates are a starting point for May.
Average weather in Japan
TemperatureRainfall
Similar weather in May
Other destinations whose May averages sit close to this one.
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FAQs about Japan
Climate averages for Japan, 1991–2020.
The best time to visit Japan is between May and October, the most comfortable stretch of the year on these averages.
August is the hottest month, with an average around 26°C.
September is the wettest month, with about 156 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
