Tokyo, Japan weather in January

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

Average high: 49°F
Average low: 32°F
Rainy days: ~5 per month
Total precipitation: 1.4 in
Warmest recorded: 64°F
Coldest recorded: 18°F

Expect January days in Tokyo, Japan to top out around 49°F and cool to about 32°F overnight, with roughly 5 days of measurable rain across the month. In recent years January has ranged from 18°F to 64°F.

Other months

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