December · Belgium
Best time to visit Brussels in December Weather, crowds & prices
Weather in Brussels in December
Average temperature 5°C, 85 mm of rain, about 0 days with 6+ hours of sunshine and 93% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
3.8/10
Ranked #12 of 12 months
- Avg temp
- 5°C
- Rainfall
- 85 mm
- Humidity
- 93%
- Days with 6h+ sun
- 0
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
December in Brussels scores 3.8/10 for sightseeing and cultural travel - ranked #12 of 12. Expect around 5°C, 85 mm of rain, and roughly 0 days with 6+ hours of sunshine this month.
Grand Place grandeur, chocolate shops, and Art Nouveau streets peak May through September.
December in Brussels — the hardest end of the year
Expect 5°C (40°F) in December. A good month for city streets, viewpoints and long meals; leave swimming for another season.
Budget for roughly 85 mm of rain this month — a flexible day or two helps — with almost no days with 6+ hours of sunshine and 7.7 hours of daylight to work around it.
That is 3.8/10 on the same scale — 12th of 12 months, versus 8.9/10 for the best month here.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
Budget for low-season pricing, and crowds are light for this destination.
If your dates are flexible, July is materially better in Brussels — 5.1 points higher on the same scale.
Frequently asked
- What is the weather like in Brussels in December?
- In December, Brussels averages 5°C, 85 mm of rain, and about 0 days with 6+ hours of sunshine. Its climate-comfort score is 3.8/10.
- Is December a good time to visit Brussels?
- December earns a 3.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Brussels in December?
- Expect about 85 mm of rain in December. Average humidity is 93% and there are about 0 days with 6+ hours of sunshine.
Curated in Brussels
Tickets & experiences
Things to do in Brussels
Brussels, Belgium. Live activities and tours from GetYourGuide, matched to this destination.