Brussels in December
In December, Brussels averages 7°C (45°F) during the day and 2°C (36°F) at night, with frequent rain — about 14 days of the month see precipitation (80 mm total).
ShoulderConditions are cold — pack winter layers. Plan for unsettled weather and bring rain gear.
December is one of the wetter and less comfortable months in Brussels. If your dates are flexible, consider a different time of year.
How December compares to the rest of the year in Brussels
December is one of the coolest months in Brussels (11th of 12) and one of the wettest months (2nd of 12). Daytime temperature runs 7°C below the annual average (14°C). December runs 2°C cooler than November (9°C) and cools 1°C in January (6°C).
December sunrise & sunset in Brussels
Times shown for Brussels local time (Europe/Brussels), calculated for the 15th of December. They shift by a few minutes day to day across the month.
Photography light in Brussels — December
Golden-hour and blue-hour windows for the 15th of December, in Brussels's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Brussels in December
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on December's tier (Shoulder) and Brussels's popularity.
Crowds & pricing — December in Brussels
Brussels is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Why this tier: Christmas / New Year travel surge
Sun & mosquito risk — December in Brussels
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Brussels in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 6°C / 43°F | 1°C / 34°F | 75 mm | 15 | 0 |
| February | 7°C / 45°F | 1°C / 34°F | 65 mm | 12 | 0 |
| March | 11°C / 52°F | 3°C / 37°F | 65 mm | 13 | 0 |
| April | 14°C / 57°F | 5°C / 41°F | 55 mm | 12 | 0 |
| May | 18°C / 64°F | 9°C / 48°F | 70 mm | 12 | 0 |
| June | 21°C / 70°F | 12°C / 54°F | 75 mm | 12 | 0 |
| July | 23°C / 73°F | 14°C / 57°F | 75 mm | 12 | 0 |
| August | 23°C / 73°F | 14°C / 57°F | 80 mm | 12 | 0 |
| September | 19°C / 66°F | 11°C / 52°F | 70 mm | 12 | 0 |
| October | 15°C / 59°F | 8°C / 46°F | 75 mm | 13 | 0 |
| November | 9°C / 48°F | 4°C / 39°F | 80 mm | 13 | 0 |
| December | 7°C / 45°F | 2°C / 36°F | 80 mm | 14 | 0 |
Other cities with similar December weather
🌍 See the full ranked list of climate twins for Brussels in December →
Frequently asked questions
How hot is Brussels in December?
In December, Brussels averages a high of 7°C (45°F) and a low of 2°C (36°F) — generally cold.
Does it rain a lot in Brussels in December?
December can be fairly wet in Brussels, with about 14 rainy days on average.
Is December a good time to visit Brussels?
December is cold but on the rainy side. It suits travelers who are comfortable with cold weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Brussels in December?
Pack heavy winter layers, a coat, hat and gloves, plus a compact umbrella or rain jacket. See the full December packing list for Brussels for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.