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Get the Brussels weather forecast without ads, cookies, or tracking. Open-Meteo data, 10-day forecast, hourly conditions, and radar — all free. click here to hide this
July is the hottest month in Brussels, with an average high of 23°C / 74°F; January is the coldest (6°C / 43°F). December is the wettest month, averaging 76 mm / 3.0 in of precipitation.
| Month | High °C / °F | Low °C / °F | Precip mm / in | Wet days |
|---|---|---|---|---|
| Jan | 6 / 43 | 1 / 34 | 63 / 2.5 | 10 |
| Feb | 7 / 45 | 1 / 35 | 53 / 2.1 | 10 |
| Mar | 11 / 52 | 4 / 38 | 52 / 2.0 | 9 |
| Apr | 15 / 59 | 6 / 43 | 41 / 1.6 | 8 |
| May | 19 / 65 | 9 / 49 | 51 / 2.0 | 8 |
| Jun | 21 / 70 | 12 / 54 | 63 / 2.5 | 8 |
| Jul | 23 / 74 | 14 / 58 | 68 / 2.7 | 9 |
| Aug | 23 / 74 | 14 / 57 | 73 / 2.9 | 8 |
| Sep | 20 / 67 | 11 / 52 | 54 / 2.1 | 8 |
| Oct | 15 / 59 | 8 / 47 | 57 / 2.2 | 9 |
| Nov | 10 / 50 | 5 / 40 | 63 / 2.5 | 10 |
| Dec | 6 / 44 | 2 / 36 | 76 / 3.0 | 12 |
Extremes since 1833: highest 40°C / 103°F (July 25, 2019), lowest -21°C / -6°F (January 25, 1881).
Daylight lasts about 16.3 hours in June and 7.7 hours in December.
Data: Meteostat — Uccle, 1991–2020 averages.
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