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 | 29 | 24 | 18 | 15 | 15 | 20 | 19 | 25 | 30 | 32 | 35 | 37 | 37 |
| Average high, °C | 19 | 15 | 10 | 7 | 7 | 8 | 11 | 14 | 17 | 20 | 22 | 22 | 14 |
| Average temperature, °C | 15 | 11 | 7 | 5 | 4 | 4 | 7 | 9 | 12 | 15 | 17 | 17 | 10 |
| Average low, °C | 10 | 7 | 4 | 2 | 1 | 1 | 3 | 4 | 7 | 10 | 12 | 12 | 6 |
| Record low, °C | 2 | -7 | -4 | -7 | -6 | -7 | -6 | -8 | 0 | 7 | 7 | 5 | -8 |
| Rain, days | 9 | 10 | 10 | 10 | 10 | 9 | 10 | 9 | 8 | 9 | 8 | 8 | 110 |
| Snow, days | 0 | 0 | 0 | 1 | 1 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 5 |
| Fog, days | 2 | 2 | 2 | 3 | 2 | 2 | 2 | 1 | 1 | 0 | 0 | 1 | 18 |
| Thunderstorms, days | 17 | 19 | 17 | 19 | 18 | 17 | 17 | 14 | 15 | 15 | 14 | 17 | 199 |
| Snowfall, cm. | 0 | 0 | 0 | 5 | 10 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 23 |
| Average precipitation, mm. | 54 | 48 | 44 | 53 | 44 | 32 | 46 | 43 | 38 | 52 | 52 | 46 | 552 |
| Relative humidity, % | 72 | 79 | 86 | 88 | 87 | 82 | 76 | 71 | 71 | 69 | 68 | 66 | 76 |
| Relative humidity morning, % | 82 | 82 | 80 | 79 | 82 | 81 | 82 | 82 | 81 | 79 | 80 | 81 | 81 |
| Relative humidity evening, % | 61 | 67 | 73 | 76 | 77 | 72 | 67 | 63 | 63 | 62 | 59 | 57 | 66 |
| Wind speed, km/h | 10 | 11 | 12 | 12 | 14 | 13 | 12 | 11 | 10 | 9 | 9 | 9 | 11 |
| Day Length, часов | 13 | 11 | 9 | 9 | 9 | 11 | 13 | 15 | 17 | 18 | 17 | 15 | 13 |
| Dew point, °C | 10 | 7 | 4 | 1 | 0 | 1 | 1 | 4 | 6 | 9 | 11 | 11 | 65 |
| Growing degree-day, °C | 100 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 26 | 117 | 164 | 164 | 578 |
| Solar radiation, global, Mj/m2 | 10 | 6 | 3 | 2 | 3 | 5 | 9 | 13 | 17 | 18 | 17 | 15 | 10 |