Weather in Brussels for December 2026
In general, the average temperature in Brussels at the beginning of December is 6.2 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 7.9 °C by the end of December.
The climate of Brussels in December is notably wet, with an average of 14 rainy days, and a total of 73.5 mm of precipitation.
Is December a good time to visit Brussels? check out the best time to travel to Brussels page.
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Brussels Weather December
Temperatures trend during December in Brussels
December weather in Brussels day by day
| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. |  Patchy rain possible | 6° /2° | 1.4 mm | 0 cm | |
| 2 Dec. | Patchy rain possible | 6° /2° | 1.3 mm | 0 cm | |
| 3 Dec. |  Light freezing rain | 5° /1° | 0.9 mm | 0.2 cm | |
| 4 Dec. |  Light rain | 6° /2° | 2.8 mm | 0 cm | |
| 5 Dec. | Light rain | 6° /2° | 3.2 mm | 0.2 cm | |
| 6 Dec. | Light rain | 7° /3° | 4 mm | 0 cm | |
| 7 Dec. | Light rain | 7° /3° | 4.6 mm | 0 cm | |
| 8 Dec. | Light rain shower | 7° /4° | 2 mm | 0 cm | |
| 9 Dec. | Light rain | 7° /4° | 2.6 mm | 0 cm | |
| 10 Dec. | Light rain | 6° /3° | 3.4 mm | 0 cm | |
| 11 Dec. | Patchy rain possible | 7° /2° | 1.9 mm | 0.1 cm | |
| 12 Dec. | Patchy rain possible | 7° /3° | 1.3 mm | 0 cm | |
| 13 Dec. | Light rain | 7° /3° | 2.6 mm | 0 cm | |
| 14 Dec. | Patchy rain possible | 7° /3° | 1.4 mm | 0 cm | |
| 15 Dec. | Patchy rain possible | 8° /3° | 0.9 mm | 0 cm | |
| 16 Dec. |  Partly cloudy | 8° /4° | 0 mm | 0 cm | |
| 17 Dec. |  Overcast | 8° /4° | 0.6 mm | 0 cm | |
| 18 Dec. | Partly cloudy | 8° /4° | 0.5 mm | 0 cm | |
| 19 Dec. | Light rain | 10° /5° | 3.5 mm | 0 cm | |
| 20 Dec. | Light rain | 8° /4° | 3.3 mm | 0 cm | |
| 21 Dec. | Light rain | 9° /5° | 4 mm | 0 cm | |
| 22 Dec. | Light rain | 9° /5° | 5.2 mm | 0 cm | |
| 23 Dec. | Light rain | 9° /5° | 4.7 mm | 0 cm | |
| 24 Dec. | Patchy rain possible | 8° /4° | 1.4 mm | 0 cm | |
| 25 Dec. | Light rain | 8° /4° | 4.1 mm | 0 cm | |
| 26 Dec. | Patchy rain possible | 7° /3° | 1.3 mm | 0 cm | |
| 27 Dec. | Light rain | 7° /3° | 3.9 mm | 0 cm | |
| 28 Dec. | Patchy rain possible | 7° /4° | 1.9 mm | 0 cm | |
| 29 Dec. | Patchy rain possible | 8° /4° | 1.5 mm | 0 cm | |
| 30 Dec. | Patchy rain possible | 9° /4° | 1.2 mm | 0 cm | |
| 31 Dec. | Patchy rain possible | 9° /5° | 2 mm | 0 cm | |
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Guide for Brussels in December
In December, Brussels, Belgium experiences a transition from mild autumn weather to the colder temperatures of winter. At the beginning of the month, the weather in Brussels is typically chilly, with temperatures averaging around 6°.
The city may also experience occasional rainfall and overcast skies during this time. As the month progresses, the temperatures tend to drop further, with the end of December seeing an average temperature of around 3°.
Additionally, there is an increased likelihood of snowfall towards the end of the month, creating a picturesque winter atmosphere in the city.
It's important to note that Brussels' weather in December can be quite unpredictable, with the potential for sudden temperature fluctuations and varying levels of precipitation.
Travelers visiting Brussels during this time should be prepared for cold weather and should pack accordingly, with warm clothing and waterproof outerwear being essential.
Overall, December in Brussels offers a festive ambiance, with the city's charming Christmas markets and decorations adding to the seasonal charm despite the colder temperatures.
Brussels in December - FAQ
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Brussels snow forecast December 2026
December rainfall patterns in Brussels
Where is Brussels?Get accurate weather forecasts for Brussels, located at latitude 50.85 and longitude 4.349. Stay updated with localized weather information tailored for Brussels.