Weather in Japan in August
August in Japan is warm outdoor weather. Days are long enough to be useful. Shade starts to matter at midday.
A country pin in August is a warning: one region of Japan will not match another. Use a city page if you already know where you are going. August is the peak of the warm side of the year in Japan. If you wanted the gentlest heat, this is not that month.
- Average temp
- 26°C
21–32°C
- Rainfall
- 98 mm
Showers likely
- Sunshine
- 6.6 h
hours per day
What to expect
Daytime
Warm days in Japan in August. A hat starts to earn its keep at midday. Evenings are the comfortable part of the clock.
You can walk at more hours than in the fierce months. Still build in a pause when the sun is high. Nights are easy.
Rain
August is a wetter month in Japan. Showers are part of the deal, not a spoiled surprise.
Waterproof shoes matter more than a rain plan for a beach, especially if a beach is not why you came. Build indoor hours into the afternoon.
Evening
Evenings stay warm.
What to pack
Sun protection
Rain jacket
A layer for cooler evenings
Where to stay in Japan
Featured stays on trip1. Dates are a starting point for August.
Average weather in Japan
TemperatureRainfall
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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.
