Brussels Weather in May
May in Brussels brings pleasant temperatures, with highs of 19°C (66°F) and nights dropping to 9°C (48°F). Rainfall is on the higher side this month, averaging around 66 mm (2.6 in), so keep a rain jacket handy.
Rainfall in Brussels in May
Typically around 15 days of rainfall are expected, averaging 66 mm (2.6 in) for the month. Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.
Temperature in Brussels in May
May in Brussels brings pleasant temperatures, with highs of 19°C (66°F) and nights around 9°C (48°F). The difference between afternoon and evening temperatures is usually noticeable. At 9°C (48°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Brussels in May
There are approximately 199 hours of sunshine this month, resulting in mostly clear days.
Wind Speed in Brussels in May
Wind speeds average 3 m/s (6 knots) during May. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.If your ideal day consists of dry skies and pleasant temperatures, June, July, August and September typically offer the best circumstances for Brussels.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Belgium, check out our Brussels's climate page.
Brussels Temperature in May
Min Temperature
9°C (48°F)
Max Temperature
19°C (66°F)
Chance of Rain
50%
Precipitation
66 mm (2.6 in)
Rainy days
15 days
Humidity
70%
Windspeed
3 m/s (6 knots)
Sunshine
199 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Brussels typically rise from around 16°C (61°F) at the start of May to approximately 19°C (66°F) by the end. Nights are cool, with lows typically ranging from 7°C (45°F) to 11°C (52°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Brussels in May
Browse day-by-day weather records for Brussels spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Brussels historical weather extremes in May
Our historical data for Brussels spans 1976 to 2026, revealing these weather extremes.
- The warmest day in May was on May 27, 2005, with a maximum of 31°C (88°F).
- The lowest daytime temperature in May was 6°C (43°F), recorded on May 11, 2010.
- The coldest night in May in Brussels was on May 3, 1981, with a minimum of -1°C (30°F).
Best Places in Belgium in May
Find out more about the weather in Belgium and which places have the best travel conditions in this month. See all of Belgium in May →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Brussels in May
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Brussels in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Belgium, check out our Brussels's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Brussels climate overview or explore weather in Belgium.
