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 | 30 | 25 | 18 | 14 | 13 | 14 | 18 | 22 | 26 | 30 | 31 | 31 | 31 |
| Average high, °C | 17 | 14 | 10 | 7 | 7 | 7 | 10 | 12 | 16 | 18 | 20 | 20 | 13 |
| Average temperature, °C | 13 | 10 | 6 | 4 | 4 | 4 | 6 | 8 | 11 | 14 | 16 | 16 | 9 |
| Average low, °C | 9 | 7 | 3 | 1 | 1 | 1 | 2 | 4 | 7 | 9 | 12 | 11 | 6 |
| Record low, °C | -1 | -7 | -11 | -20 | 0 | -23 | -17 | -13 | -7 | -1 | 0 | 0 | -23 |
| Rain, days | 7 | 8 | 7 | 8 | 8 | 7 | 5 | 5 | 6 | 6 | 7 | 8 | 82 |
| Snow, days | 0 | 0 | 1 | 5 | 4 | 5 | 3 | 2 | 0 | 0 | 0 | 0 | 20 |
| Fog, days | 3 | 2 | 4 | 6 | 3 | 3 | 1 | 1 | 1 | 1 | 2 | 3 | 30 |
| Thunderstorms, days | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 3 | 2 | 1 | 1 | 13 |
| Average precipitation, mm. | 70 | 80 | 80 | 70 | 80 | 60 | 40 | 40 | 60 | 60 | 80 | 80 | 800 |
| Relative humidity, % | 84 | 86 | 88 | 88 | 87 | 86 | 82 | 79 | 76 | 76 | 80 | 83 | 83 |
| Relative humidity morning, % | 89 | 89 | 87 | 87 | 87 | 86 | 86 | 85 | 82 | 84 | 86 | 88 | 86 |
| Relative humidity evening, % | 65 | 72 | 77 | 80 | 79 | 74 | 67 | 60 | 57 | 61 | 60 | 61 | 68 |
| Wind speed, km/h | 12 | 14 | 14 | 15 | 16 | 16 | 16 | 13 | 13 | 12 | 12 | 12 | 14 |
| Day Length, часов | 13 | 11 | 9 | 8 | 9 | 11 | 13 | 15 | 17 | 18 | 17 | 15 | 13 |
| Dew point, °C | 11 | 7 | 3 | 2 | 2 | 2 | 3 | 3 | 5 | 9 | 11 | 12 | 70 |
| Growing degree-day, °C | 125 | 17 | 0 | 0 | 0 | 0 | 0 | 0 | 60 | 150 | 207 | 198 | 757 |
| Solar radiation, global, Mj/m2 | 10 | 6 | 3 | 2 | 2 | 5 | 8 | 12 | 16 | 16 | 16 | 14 | 9 |