Brussels month by month
Plan your visit to Brussels by month. Compare weather, crowds, events, and prices across all twelve months with historical climate data.
Brussels measures a January average high of 6°C against a 23°C plateau that stretches across June, July, and August. The driest months, April and June, still log 10 rain days each. November leads the year at 14. From November through February, highs stay between 6°C and 10°C, with rain days from 11 in February to 14 in November. Spring climbs. March averages 12°C, April 14°C, May 18°C. Summer holds at 23°C for three months, then September eases to 21°C and October cools to 16°C with 13 rain days.
All 12 months have their own page beneath this index. In Brussels, the biggest shift between months is temperature, not rain. June, July, and August all average 23°C, but June logs 10 rain days while July and August each record 12. September still carries warmth at 21°C with 11 rain days. Start with the month closest to your travel dates. If you have flexibility, compare April at 14°C and 10 rain days against May at 18°C and 13.
November needs the most care. Its 14 rain days lead the full year, paired with a 10°C average high. January follows at 6°C and 13 rain days, the coldest month in the measured set.
June opens Brussels's 23°C plateau with 10 rain days, the fewest of any month from May through October.
- January
- High
- 6°C
- Low
- 1°C
- Rain
- 92 mm
January in Brussels is cold, grey, and persistently damp. That is the single most important thing to know before booking. Daytime temperatures sit around 5.9°C (43°F), nights drop…
- February
- High
- 9°C
- Low
- 3°C
- Rain
- 60 mm
February in Brussels is cold, grey, and short on daylight, with roughly 10 hours between sunrise and sunset. Daytime temperatures hover around 8.8°C (48°F) and drop to 2.9°C (37°F)…
- March
- High
- 12°C
- Low
- 4°C
- Rain
- 58 mm
March in Brussels is the month the city starts to thaw, though "thaw" might be generous. Daytime temperatures reach about 12°C (53°F), which feels mild after a Belgian winter that…
- April
- High
- 14°C
- Low
- 5°C
- Rain
- 52 mm
April in Brussels revolves around one event. The Serres Royales de Laeken, a 19th-century greenhouse complex on the royal estate, opens to the public for roughly three weeks each…
- May
- High
- 18°C
- Low
- 9°C
- Rain
- 69 mm
May in Brussels comes down to one thing most visitors don't know about. The Royal Greenhouses of Laeken, Leopold II's 19th-century glass-and-iron complex in the north of the city,…
- June
- High
- 23°C
- Low
- 13°C
- Rain
- 75 mm
June is when Brussels commits to summer. Daytime highs reach 22.6°C (73°F), evenings settle around 13°C (56°F), and the sun doesn't drop below the horizon until past 22:00. Those…
- July
- High
- 23°C
- Low
- 14°C
- Rain
- 93 mm
July is the month Brussels throws its biggest party and gets its most rain. Belgian National Day on July 21 fills the city center with a military parade along Rue de la Loi, free…
- August
- High
- 23°C
- Low
- 15°C
- Rain
- 52 mm
August in Brussels is the month half the city disappears. The tradition of fermé annuel, the annual vacation shutdown, sends a noticeable share of Brusselois south to the…
- September
- High
- 21°C
- Low
- 12°C
- Rain
- 67 mm
September might be the smartest month to visit Brussels. The summer tourists clear out, but the weather hasn't turned yet. Daytime highs still reach 20.6°C (69°F), comfortable…
- October
- High
- 16°C
- Low
- 10°C
- Rain
- 92 mm
October in Brussels is when the city shifts from its short warm season into the long grey stretch that lasts through March. Daytime temperatures average around 16°C (61°F),…
- November
- High
- 10°C
- Low
- 5°C
- Rain
- 72 mm
November in Brussels is grey. The city logs roughly 14 rainy days, daylight fades by 4:45 PM, and the 88% humidity makes the average high of 10°C (50°F) feel noticeably colder on…
- December
- High
- 8°C
- Low
- 3°C
- Rain
- 69 mm
December in Brussels belongs to Plaisirs d'Hiver. The city's annual Christmas market fills Place Sainte-Catherine and stretches down Boulevard Anspach from late November through…