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August is the hottest month in Tokyo, with an average high of 31°C / 89°F; January is the coldest (10°C / 50°F). October is the wettest month, averaging 212 mm / 8.3 in of precipitation.
| Month | High °C / °F | Low °C / °F | Precip mm / in | Wet days |
|---|---|---|---|---|
| Jan | 10 / 50 | 3 / 37 | 52 / 2.0 | 4 |
| Feb | 11 / 51 | 3 / 38 | 50 / 2.0 | 5 |
| Mar | 14 / 57 | 6 / 43 | 107 / 4.2 | 8 |
| Apr | 19 / 66 | 11 / 52 | 130 / 5.1 | 9 |
| May | 23 / 74 | 16 / 60 | 126 / 5.0 | 8 |
| Jun | 26 / 79 | 20 / 67 | 163 / 6.4 | 11 |
| Jul | 30 / 86 | 24 / 74 | 140 / 5.5 | 10 |
| Aug | 31 / 89 | 25 / 76 | 136 / 5.4 | 7 |
| Sep | 28 / 82 | 21 / 70 | 211 / 8.3 | 11 |
| Oct | 22 / 72 | 16 / 60 | 212 / 8.3 | 9 |
| Nov | 17 / 63 | 10 / 51 | 93 / 3.7 | 6 |
| Dec | 12 / 54 | 5 / 41 | 49 / 1.9 | 4 |
Extremes since 1951: highest 40°C / 103°F (July 20, 2004), lowest -6°C / 21°F (January 28, 1954).
Daylight lasts about 14.4 hours in June and 9.6 hours in December.
Data: Meteostat — Tokyo, 1991–2020 averages.
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