Brussels, Belgium Weather
Brussels hourly forecast: next 24 hours
Today's high of 66°F (19°C) is right in line with the typical September high of 68°F (20°C).
Current conditions in detail
Brussels weather tomorrow (Thursday, September 17)
Tomorrow in Brussels looks overcast, with a high of 66° and an overnight low of 52°. There is a 53% chance of rain - plan accordingly. Winds top out near 17 mph, and the UV index reaches 3 (moderate).
Brussels 14-day forecast
About the weather in Brussels
Brussels averages 52°F (11°C) across the year, with 7.7 hours of sunshine a day and 31.6 inches (802 mm) of precipitation. The spread runs from January, at 43°F (6°C), to August, at 74°F (23°C).
Brussels weather: quick facts
- Hottest month: August - highs near 74°F (23°C)
- Coldest month: January - highs near 43°F (6°C)
- Decade extremes (2015-2024): 101°F (38°C) high · 17°F (-8°C) low
- Wettest month: December (14 rainy days) · Sunniest: July (11.4 h sun/day)
- Climate type: oceanic
- Annual swing: 15°C between the average warmest and coolest month · day to night: 7°C
- Snow: about 4 days a year
- Average humidity: 78%
Temperatures through the year
Snow falls on roughly 4 days a year, mostly December through April. January bottoms out at 43°F (6°C) in daylight, 35°F (2°C) after dark. At its warmest, in August, Brussels runs to 74°F (23°C) in the afternoon and back to 59°F (15°C) by dawn. Days and nights are about 7°C apart on average - narrower than about 76% of the cities we track.
Rain, sun and snow
Five of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is May through September. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 101°F (38°C) and the lowest daily minimum 17°F (-8°C).
Season by season
Spring (March through May)
Spring in Brussels is crisp but comfortable, with daytime highs averaging 58°F (14°C) and nights around 42°F (6°C); rain falls on around 36 of the 90 days.
Summer (June through August)
Summer in Brussels settles into easy warmth, with daytime highs averaging 73°F (23°C) and nights around 57°F (14°C); rain falls on around 33 of the 90 days. Daylight is generous - around 11.1 hours of sun a day.
Fall (September through November)
Fall in Brussels runs cool rather than cold, with daytime highs averaging 60°F (15°C) and nights around 48°F (9°C); rain falls on around 38 of the 90 days.
Winter (December through February)
Winter is chilly here - highs near 46°F (8°C), nights near 36°F (2°C), and rain falls on around 40 of the 90 days, plus about 3 snowy days.
Average temperatures in Brussels by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 43° | 35° | 14 | 3.0 in | 3.6 h/day | 87% |
| February | 47° | 36° | 12 | 2.6 in | 5.4 h/day | 82% |
| March | 52° | 38° | 14 | 2.8 in | 7.0 h/day | 78% |
| April | 57° | 41° | 11 | 1.9 in | 9.7 h/day | 72% |
| May | 65° | 48° | 12 | 2.5 in | 10.9 h/day | 72% |
| June | 72° | 55° | 10 | 2.8 in | 11.3 h/day | 71% |
| July | 73° | 58° | 11 | 2.7 in | 11.4 h/day | 71% |
| August | 74° | 59° | 12 | 2.3 in | 10.7 h/day | 72% |
| September | 68° | 54° | 11 | 2.5 in | 9.0 h/day | 76% |
| October | 60° | 49° | 13 | 2.8 in | 6.0 h/day | 82% |
| November | 51° | 41° | 14 | 2.7 in | 4.5 h/day | 86% |
| December | 46° | 38° | 14 | 3.0 in | 3.2 h/day | 88% |