Climate Insights for Brussels

The climate in Brussels is cool. The average annual temperature is 8°C and approximately 972mm of precipitation falls per year. Brussels receives a notable amount of rainfall throughout the year, including during its driest month. Brussels is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: Luglio, Agosto, Giugno. The coldest months are Febbraio, Gennaio, Dicembre, when temperatures can drop to -9°C. Snowfall occurs from January to December, with around 102cm accumulating over the season.

Temperatures in Brussels vary considerably across the year, with a 35°C difference between the coldest and warmest months. The warmest month is Luglio, when average highs reach 26°C and the mean temperature sits around 22°C. The coldest month is Febbraio, when overnight lows fall to -9°C and the daily average is -6°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between April and May, with a 7°C shift in average temperatures.

Brussels is a moderately rainy area, receiving approximately 972mm of precipitation annually, which averages out to around 81mm per month. The wettest month is April, averaging 104mm of rainfall. May and June also tend to see above-average precipitation. The driest month is February, with just 42mm. That's 62mm less than April, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 102cm accumulating over the season. December typically sees the most snow at around 22cm.

Brussels is moderately windy, with an average annual wind speed of 22km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 24km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in August, with average winds dropping to 19km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 5km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 22km/h in winter, 23km/h in spring, 20km/h in summer, 23km/h in autumn.

It is currently spring in Brussels, which began on March 20, 2026. Brussels is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in Luglio at around 26°C, while the coldest stretch bottoms out in Febbraio near -9°C. Summer is next, beginning on June 21, 2026 — 93 days from now.

The best time to visit Brussels is during Giugno, Luglio, Agosto and Settembre, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 90mm per month. By contrast, Febbraio can be quite cold with temperatures dropping to -9°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Brussels based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.