London
United Kingdom
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 26 | 22 | 23 | 15 | 14 | 15 | 18 | 24 | 26 | 29 | 29 | 31 | 31 |
| Average high, °C | 18 | 15 | 12 | 10 | 9 | 9 | 11 | 13 | 16 | 18 | 20 | 20 | 14 |
| Average temperature, °C | 14 | 11 | 8 | 6 | 6 | 6 | 7 | 9 | 11 | 14 | 16 | 16 | 10 |
| Average low, °C | 12 | 9 | 6 | 5 | 4 | 4 | 5 | 6 | 9 | 11 | 13 | 13 | 8 |
| Record low, °C | 5 | 0 | -3 | -4 | -5 | -7 | -3 | -2 | 1 | 5 | 1 | 7 | -7 |
| Rain, days | 10 | 14 | 15 | 15 | 15 | 12 | 12 | 11 | 10 | 9 | 9 | 10 | 142 |
| Snow, days | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 4 |
| Fog, days | 3 | 4 | 3 | 2 | 3 | 2 | 3 | 3 | 3 | 3 | 4 | 3 | 36 |
| Thunderstorms, days | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 2 | 1 | 8 |
| Average precipitation, mm. | 79 | 94 | 109 | 115 | 108 | 83 | 78 | 57 | 62 | 55 | 63 | 72 | 975 |
| Relative humidity, % | 84 | 85 | 86 | 85 | 85 | 84 | 83 | 80 | 80 | 81 | 83 | 83 | 83 |
| Relative humidity morning, % | 91 | 89 | 87 | 87 | 86 | 87 | 88 | 86 | 86 | 87 | 88 | 91 | 88 |
| Relative humidity evening, % | 75 | 77 | 79 | 82 | 80 | 78 | 75 | 68 | 70 | 71 | 72 | 73 | 75 |
| Wind speed, km/h | 17 | 20 | 20 | 22 | 23 | 22 | 21 | 18 | 18 | 16 | 17 | 16 | 19 |
| Day Length, часов | 13 | 11 | 10 | 9 | 9 | 11 | 13 | 14 | 16 | 17 | 17 | 15 | 13 |
| Dew point, °C | 11 | 8 | 6 | 5 | 3 | 3 | 4 | 5 | 7 | 10 | 12 | 12 | 86 |
| Growing degree-day, °C | 117 | 17 | 0 | 0 | 0 | 0 | 0 | 0 | 17 | 117 | 172 | 172 | 612 |
| Solar radiation, global, Mj/m2 | 11 | 6 | 4 | 2 | 3 | 6 | 9 | 14 | 18 | 19 | 19 | 16 | 11 |