Brussels climate by month
In Brussels, the warmest month is August, with average highs of 24.3 °C, and the coldest is January, with average lows of 0.7 °C. About 788 mm of rain falls each year over 153 days; January is the wettest month (78 mm) and April the driest (42 mm).
Best time to visit Brussels: for mild, mostly dry days, aim for June, July, August, September.
| Month | Avg high | Avg low | Rain | Rainy days |
|---|---|---|---|---|
| January | 6 °C | 0.7 °C | 78 mm | 15 |
| February | 8.3 °C | 1.3 °C | 64 mm | 13 |
| March | 11.2 °C | 2.5 °C | 76 mm | 13 |
| April | 14.7 °C | 4.2 °C | 42 mm | 11 |
| May | 18.7 °C | 8.2 °C | 60 mm | 11 |
| June | 22.5 °C | 12 °C | 68 mm | 11 |
| July | 23.8 °C | 13.4 °C | 62 mm | 12 |
| August | 24.3 °C | 13.9 °C | 66 mm | 13 |
| September | 21 °C | 11.1 °C | 64 mm | 12 |
| October | 16.2 °C | 8.2 °C | 64 mm | 13 |
| November | 10.4 °C | 4.4 °C | 69 mm | 14 |
| December | 7.3 °C | 2.6 °C | 75 mm | 14 |
2015–2024 averages computed from NASA POWER data (about 50 km grid: values may differ slightly from a city weather station, especially on the coast or in the mountains).
Frequently asked questions
What is the 15-day weather forecast for Brussels?
The first 10 days come from the forecast model of the Norwegian Meteorological Institute (MET Norway), updated several times a day. After that, we show the outlook: the normal temperatures in Brussels for the time of year and the chance of rain, based on the last 10 years.
Is there a 30-day forecast for Brussels?
No model can reliably forecast the weather on a specific day 30 days ahead. The outlook shows what is typical in Brussels at that time of year: a good basis for planning a trip, to be checked against the 10-day forecast as the date gets closer.
What is the hottest month in Brussels?
August, with average highs of 24.3 °C. The coldest month is January, with average lows of 0.7 °C.
What is the rainiest month in Brussels?
January. The driest month is April. On average it rains on 153 days a year in Brussels, for about 788 mm of precipitation.
How can I check past weather in Brussels?
Pick a date in the "Past weather" section to see the high and low temperatures and the rain recorded that day, how it compared with normal, and the same day in previous years.
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