Tokyo, Japan weather in August

Averages from 2021–2025 (155 days of record).

Average high: 91°F
Average low: 77°F
Rainy days: ~14 per month
Total precipitation: 5.7 in
Warmest recorded: 102°F
Coldest recorded: 66°F

Expect August days in Tokyo, Japan to top out around 91°F and cool to about 77°F overnight, with roughly 14 days of measurable rain across the month. In recent years August has ranged from 66°F to 102°F.

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Current Tokyo, Japan forecast → · Historical data by Open-Meteo (ERA5).