Tokyo Climate by Month – Rainy Season, Temperature Averages
Summary
The climate figures for Tokyo are averaged from 2016–2025 observations (10 years). Annual rainfall averages about 1,592 mm.
The rainy season runs March–October. The wettest month is September with 207.8 mm across 16 rain days; the driest is February at just 50.8 mm.
The hottest month is August (average high 31.8°C) and the coolest is January (9.2°C).
The most comfortable time to visit Tokyo is February — less rain and milder heat.
Monthly averages · 2016–2025
| Monthly averages | High | Low | Rainfall | Rainy season |
|---|---|---|---|---|
| January | 9.2° | 0.0° | 52 mm | 5 |
| February | 10.5° | 1.0° | 51 mm | 7 |
| March | 14.4° | 4.8° | 144 mm | 12 |
| April | 18.9° | 9.7° | 135 mm | 12 |
| May | 23.1° | 14.5° | 154 mm | 12 |
| June | 26.3° | 18.8° | 192 mm | 15 |
| July | 30.4° | 23.2° | 178 mm | 16 |
| August | 31.8° | 24.4° | 140 mm | 14 |
| September | 27.8° | 21.1° | 208 mm | 16 |
| October | 21.6° | 14.4° | 201 mm | 13 |
| November | 16.7° | 8.2° | 83 mm | 9 |
| December | 11.5° | 2.4° | 56 mm | 7 |