Tokyo
Japan
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 31 | 27 | 23 | 21 | 13 | 15 | 18 | 26 | 29 | 31 | 33 | 33 | 33 |
| Average high, °C | 22 | 17 | 11 | 6 | 3 | 3 | 7 | 12 | 17 | 20 | 23 | 26 | 14 |
| Average temperature, °C | 20 | 14 | 8 | 3 | 0 | 1 | 3 | 9 | 14 | 18 | 21 | 23 | 11 |
| Average low, °C | 17 | 10 | 5 | 1 | -2 | -1 | 0 | 6 | 11 | 16 | 19 | 21 | 9 |
| Record low, °C | 7 | 1 | -2 | -8 | -10 | -11 | -6 | -2 | 1 | 8 | 10 | 13 | -11 |
| Rain, days | 7 | 6 | 4 | 5 | 4 | 3 | 4 | 7 | 6 | 10 | 7 | 6 | 69 |
| Snow, days | 0 | 0 | 2 | 8 | 14 | 14 | 9 | 0 | 0 | 0 | 0 | 0 | 47 |
| Fog, days | 12 | 12 | 10 | 8 | 5 | 4 | 8 | 11 | 12 | 15 | 17 | 17 | 131 |
| Thunderstorms, days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 4 |
| Snowfall, cm. | 0 | 0 | 1 | 6 | 18 | 15 | 10 | 4 | 0 | 0 | 0 | 0 | 54 |
| Average precipitation, mm. | 140 | 120 | 50 | 50 | 30 | 40 | 70 | 80 | 100 | 130 | 130 | 90 | 1030 |
| Relative humidity, % | 85 | 83 | 79 | 80 | 78 | 76 | 77 | 78 | 80 | 85 | 87 | 86 | 81 |
| Relative humidity morning, % | 89 | 87 | 82 | 78 | 78 | 79 | 78 | 80 | 82 | 88 | 90 | 89 | 83 |
| Relative humidity evening, % | 71 | 64 | 63 | 62 | 61 | 60 | 58 | 62 | 66 | 75 | 77 | 75 | 66 |
| Wind speed, km/h | 9 | 9 | 9 | 9 | 9 | 14 | 16 | 14 | 14 | 12 | 9 | 12 | 11 |
| Monthly sunshine, часов | 121 | 149 | 140 | 139 | 148 | 152 | 177 | 189 | 185 | 134 | 120 | 144 | 1796 |
| Day Length, часов | 13 | 12 | 11 | 10 | 10 | 11 | 12 | 14 | 15 | 15 | 15 | 14 | 13 |
| Dew point, °C | 16 | 9 | 3 | -1 | -4 | -3 | -2 | 3 | 8 | 14 | 18 | 20 | 81 |
| Growing degree-day, °C | 300 | 129 | 0 | 0 | 0 | 0 | 0 | 0 | 138 | 250 | 362 | 431 | 1609 |
| Solar radiation, global, Mj/m2 | 11 | 10 | 8 | 7 | 8 | 12 | 15 | 18 | 18 | 16 | 15 | 15 | 13 |