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 | 28 | 25 | 17 | 15 | 14 | 18 | 21 | 26 | 29 | 32 | 31 | 34 | 34 |
| Average high, °C | 17 | 13 | 9 | 6 | 6 | 6 | 9 | 12 | 15 | 18 | 20 | 19 | 12 |
| Average temperature, °C | 13 | 10 | 6 | 4 | 3 | 3 | 6 | 8 | 11 | 13 | 16 | 15 | 9 |
| Average low, °C | 9 | 6 | 3 | 1 | 1 | 1 | 2 | 4 | 6 | 9 | 11 | 11 | 5 |
| Record low, °C | -6 | -4 | -12 | -8 | -7 | -11 | -7 | -6 | -8 | -4 | 3 | -1 | -12 |
| Rain, days | 11 | 14 | 16 | 15 | 16 | 13 | 14 | 11 | 11 | 12 | 10 | 12 | 154 |
| Snow, days | 0 | 0 | 1 | 4 | 4 | 5 | 3 | 3 | 0 | 0 | 0 | 0 | 20 |
| Fog, days | 1 | 1 | 3 | 3 | 3 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 15 |
| Thunderstorms, days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 1 | 1 | 0 | 6 |
| Snowfall, cm. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Average precipitation, mm. | 56 | 66 | 61 | 69 | 41 | 46 | 41 | 56 | 43 | 61 | 46 | 43 | 627 |
| Relative humidity, % | 75 | 79 | 84 | 83 | 81 | 77 | 74 | 70 | 69 | 70 | 69 | 71 | 75 |
| Relative humidity morning, % | 86 | 88 | 86 | 84 | 84 | 82 | 83 | 85 | 83 | 82 | 83 | 86 | 84 |
| Relative humidity evening, % | 59 | 71 | 76 | 78 | 74 | 70 | 62 | 61 | 55 | 59 | 58 | 58 | 65 |
| Wind speed, km/h | 13 | 13 | 13 | 14 | 16 | 18 | 17 | 14 | 13 | 14 | 14 | 13 | 14 |
| Day Length, часов | 13 | 11 | 9 | 8 | 9 | 11 | 13 | 15 | 17 | 18 | 17 | 15 | 13 |
| Dew point, °C | 8 | 7 | 3 | 3 | 1 | 1 | 2 | 2 | 6 | 8 | 10 | 10 | 61 |
| Growing degree-day, °C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 21 | 105 | 165 | 155 | 96 | 543 |
| Solar radiation, global, Mj/m2 | 10 | 6 | 3 | 2 | 2 | 5 | 8 | 13 | 17 | 17 | 17 | 14 | 9 |