Brussels in december: average Weather, Temperature and Climate
Weather in Brussels in december 2026
The weather in Brussels in the month of december comes from statistical datas on the past years. You can view the weather statistics for the whole month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout december
very bad weather 119cm
Weather at 6am
40°F
Cloudy
22% of time
18%
18%
15%
Weather at 12pm
45°F
Cloudy
24% of time
21%
19%
18%
Weather at 6pm
41°F
Cloudy
21% of time
21%
20%
16%
Weather at 3am
41°F
24%
23%
15%
15%
Evolution of daily average temperature and precipitation in Brussels in december
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Brussels in december.
The climate of Brussels in december is very bad
In december in Brussels, the climate is wet (with 4.5in of rainfall over 7 days). The weather is worst than the previous month since in november there is an average of 3.7in of rainfall over 6 days.
The climate is rather more than very fresh in this city the month of december. Plan a sweater! Temperatures are up to 45°F. The seasonal minimum is 40°F. Thus, the mean temperature average on this month of december in Brussels is 43°F. These temperatures are far removed from those records observed in Brussels in the month of december with a maximum record of 63°F in 2021 and a minimum record of 14°F in 2010. You need to prepare to have about 6 days with temperatures down below 32°F, or 19% of the month.
In december in Brussels, the days on average last 07:59. The sun rises at 08:38 and sunset is at 16:37.
Seasonal average climate and temperature of Brussels in december
Check below seasonal norms These datas are generated from the weather statements earlier years of the month of december.
| December | |||||
| Outside temperature | |||||
| Average temperature | 43°F | ||||
| Highest temperature | 45°F | ||||
| Lowest temperature | 40°F | ||||
| Highest record temperature | 63°F (2021) | ||||
| Lowest record temperature | 14°F (2010) | ||||
| Number of days at +65°F | 0 day(s) (0%) | ||||
| Number of days at -32°F | 6 day(s) (19%) | ||||
| Sea temperature | |||||
| Average sea temperature | 51°F | ||||
| Lowest sea temperature | 47°F | ||||
| Highest sea temperature | 55°F | ||||
| Wind | |||||
| Wind speed | 22km/h | ||||
| Wind temperature | 32°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 4.5in | ||||
| Number of days with rainfall | 7 day(s) (23%) | ||||
| Record daily rainfall | 1.3in (2020) | ||||
| Snowfall | 119cm | ||||
| Other climate data | |||||
| Humidity | 92% | ||||
| Visibility | 8.22km | ||||
| Cloud cover | 62% | ||||
| UV index | 2 | ||||
| Daily sunshine hours | 6 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 08:38 | ||||
| Time of sunset | 16:37 | ||||
| Length of day | 07:59 | ||||
| Our opinion about the weather in december | |||||
| Our opinion at whereandwhen.net | very bad | ||||
How was the weather last december?
Here is the day by day recorded weather in Brussels in december 2025:
36°F to 45°F
41°F to 47°F
41°F to 49°F
41°F to 47°F
38°F to 45°F
45°F to 50°F
49°F to 58°F
52°F to 56°F
52°F to 58°F
50°F to 54°F
43°F to 52°F
49°F to 52°F
45°F to 50°F
41°F to 50°F
43°F to 50°F
47°F to 52°F
47°F to 50°F
49°F to 54°F
50°F to 54°F
41°F to 47°F
49°F to 54°F
41°F to 47°F
36°F to 43°F
31°F to 36°F
29°F to 36°F
29°F to 38°F
31°F to 41°F
31°F to 41°F
31°F to 40°F
34°F to 41°F
32°F to 41°F
Map: other cities in Belgium in december
Cities near Brussels:
| Hoeilaart in december | very bad weather |
| Mechelen in december | very bad weather |
| Aalst in december | very bad weather |
| Leuven in december | very bad weather |
| Dendermonde in december | very bad weather |
| Louvain-la-Neuve in december | very bad weather |
| Villers-la-Ville in december | very bad weather |
| Geraardsbergen in december | very bad weather |
| Sint-Niklaas in december | very bad weather |
| Antwerp in december | very bad weather |
| Tienen in december | very bad weather |
| La Louvière in december | very bad weather |
Click over cities on the map for information about the weather in december.
Brussels
perfect weather
good
tolerable
bad
very bad
Weather data for Brussels in december:
Weather data for Brussels for december are derived from an average of the weather forecast since 2009 in Brussels. There is a margin of error and these forecasts are to be considered as general information only. The weather in Brussels can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Brussels.