Tokyo, Japan weather in May

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

Average high: 73°F
Average low: 58°F
Rainy days: ~15 per month
Total precipitation: 7.6 in
Warmest recorded: 87°F
Coldest recorded: 44°F

Expect May days in Tokyo, Japan to top out around 73°F and cool to about 58°F overnight, with roughly 15 days of measurable rain across the month. In recent years May has ranged from 44°F to 87°F.

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