Brussels
Belgium
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 27 | 22 | 17 | 16 | 13 | 13 | 20 | 21 | 27 | 32 | 32 | 32 | 32 |
| Average high, °C | 17 | 14 | 11 | 8 | 8 | 7 | 10 | 12 | 15 | 18 | 21 | 20 | 13 |
| Average temperature, °C | 13 | 11 | 7 | 6 | 5 | 5 | 7 | 8 | 11 | 14 | 16 | 16 | 10 |
| Average low, °C | 10 | 7 | 5 | 3 | 2 | 2 | 3 | 4 | 7 | 10 | 12 | 11 | 6 |
| Record low, °C | 1 | -2 | -5 | -7 | -12 | -8 | -7 | -3 | -1 | 1 | 6 | 3 | -12 |
| Rain, days | 20 | 23 | 21 | 24 | 23 | 18 | 22 | 19 | 20 | 18 | 19 | 19 | 246 |
| Snow, days | 0 | 0 | 0 | 1 | 1 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 6 |
| Fog, days | 6 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 4 | 2 | 3 | 6 | 45 |
| Thunderstorms, days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 5 |
| Average precipitation, mm. | 10 | 15 | 13 | 23 | 25 | 28 | 13 | 15 | 3 | 5 | 5 | 8 | 162 |
| Relative humidity, % | 80 | 84 | 87 | 87 | 86 | 83 | 81 | 78 | 76 | 75 | 74 | 76 | 81 |
| Relative humidity morning, % | 93 | 92 | 90 | 89 | 88 | 89 | 90 | 91 | 91 | 91 | 92 | 94 | 91 |
| Relative humidity evening, % | 70 | 77 | 80 | 83 | 81 | 77 | 72 | 67 | 67 | 66 | 65 | 66 | 73 |
| Wind speed, km/h | 13 | 14 | 14 | 15 | 17 | 17 | 16 | 15 | 14 | 14 | 13 | 13 | 15 |
| Monthly sunshine, часов | 152 | 114 | 61 | 50 | 66 | 71 | 121 | 172 | 194 | 206 | 211 | 200 | 1617 |
| Day Length, часов | 13 | 11 | 10 | 9 | 9 | 11 | 13 | 15 | 16 | 17 | 17 | 15 | 13 |
| Dew point, °C | 11 | 8 | 5 | 4 | 3 | 2 | 3 | 4 | 7 | 10 | 12 | 12 | 81 |
| Growing degree-day, °C | 117 | 34 | 0 | 0 | 0 | 0 | 0 | 0 | 43 | 142 | 207 | 189 | 732 |
| Solar radiation, global, Mj/m2 | 12 | 7 | 4 | 2 | 3 | 6 | 10 | 16 | 20 | 21 | 20 | 18 | 11 |