
Twelve months of Brussels, Belgium weather — averages from 2006–2025.
Brussels's warmest month is July (average high 22.9°C (73.2°F)) and the coolest is January (6°C (42.8°F)). The most rain falls in December (about 74 mm), and April is the driest (about 41 mm). July is the sunniest, with about 11.5 hours of sunshine a day.
Ranked within Brussels's own year by temperature comfort, rainy days and sunshine — historical averages, not a forecast.
High 6°C (42.8°F)
Low 1.4°C (34.5°F)
High 7.6°C (45.7°F)
Low 1.8°C (35.2°F)
High 10.7°C (51.3°F)
Low 3°C (37.4°F)
High 14.7°C (58.5°F)
Low 5.5°C (41.9°F)
High 18.1°C (64.6°F)
Low 9.3°C (48.7°F)
High 21.4°C (70.5°F)
Low 12.6°C (54.7°F)
High 22.9°C (73.2°F)
Low 14.5°C (58.1°F)
High 22.6°C (72.7°F)
Low 14.4°C (57.9°F)
High 19.7°C (67.5°F)
Low 12°C (53.6°F)
High 15.4°C (59.7°F)
Low 9.3°C (48.7°F)
High 10.3°C (50.5°F)
Low 5.4°C (41.7°F)
High 7.1°C (44.8°F)
Low 2.8°C (37°F)
Based on 20 years of historical weather data (2006–2025) from Open-Meteo. Monthly averages, not a forecast.