Tokyo
Japan
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 37 | 29 | 23 | 22 | 17 | 18 | 22 | 28 | 30 | 32 | 37 | 36 | 37 |
| Average high, °C | 27 | 22 | 17 | 11 | 9 | 9 | 12 | 18 | 22 | 26 | 30 | 31 | 20 |
| Average temperature, °C | 23 | 18 | 12 | 7 | 5 | 5 | 8 | 13 | 18 | 22 | 26 | 27 | 15 |
| Average low, °C | 20 | 13 | 8 | 3 | 1 | 1 | 4 | 9 | 13 | 18 | 22 | 23 | 11 |
| Record low, °C | 10 | 3 | 0 | -3 | -4 | -7 | -3 | 1 | 5 | 11 | 16 | 16 | -7 |
| Rain, days | 9 | 6 | 4 | 5 | 5 | 5 | 6 | 7 | 8 | 10 | 9 | 6 | 80 |
| Snow, days | 0 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 2 | 0 | 11 |
| Fog, days | 11 | 12 | 12 | 13 | 8 | 8 | 8 | 9 | 14 | 16 | 19 | 14 | 144 |
| Thunderstorms, days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 3 | 2 | 8 |
| Snowfall, cm. | 0 | 0 | 0 | 0 | 3 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 8 |
| Average precipitation, mm. | 191 | 104 | 67 | 47 | 48 | 66 | 109 | 163 | 155 | 252 | 228 | 114 | 1544 |
| Relative humidity, % | 70 | 68 | 69 | 69 | 68 | 67 | 64 | 63 | 66 | 72 | 74 | 71 | 68 |
| Relative humidity morning, % | 85 | 82 | 82 | 80 | 78 | 79 | 79 | 78 | 81 | 86 | 88 | 85 | 82 |
| Relative humidity evening, % | 65 | 57 | 55 | 54 | 53 | 54 | 55 | 55 | 58 | 68 | 70 | 65 | 59 |
| Wind speed, km/h | 12 | 12 | 12 | 9 | 9 | 9 | 12 | 12 | 9 | 9 | 6 | 9 | 10 |
| Monthly sunshine, часов | 165 | 182 | 152 | 149 | 137 | 140 | 169 | 190 | 206 | 161 | 180 | 211 | 2042 |
| Day Length, часов | 13 | 12 | 11 | 10 | 11 | 11 | 12 | 14 | 14 | 15 | 15 | 14 | 13 |
| Dew point, °C | 18 | 11 | 6 | 1 | -1 | -1 | 1 | 6 | 11 | 17 | 21 | 22 | 112 |
| Growing degree-day, °C | 400 | 224 | 67 | 0 | 0 | 0 | 0 | 100 | 224 | 350 | 491 | 517 | 2372 |
| Solar radiation, global, Mj/m2 | 13 | 12 | 9 | 8 | 8 | 10 | 14 | 17 | 18 | 17 | 17 | 17 | 13 |