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Brussels in December: Weather, Average temperature and Climate

Take a look at past year’s weather for Brussels in December and see if it is worth visiting.
Check flight prices to Brussels on Avionero:
December

Weather in Brussels in December 2024

OK Weather
Chill
☁️
Cloudy
December could be a good time to visit Brussels, as the weather is generally fine. The average high temperature is around +45°F, and there are typically 3 sunny days in December. However, expect about 8 rainy days, and total monthly rainfall of approximately 65 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.
Good to know:
  • December is usually the wettest month of the year in Brussels;

Average weather

☀️
+45°F
Avg. max. temperature
+9°F
Min.
+63°F
Max.
65 mm
Total precipitation
85%
Avg. humidity
3 m/s
Avg. wind
3 ☀️
Sunny Days
19 ⛅️
Cloudy
8 🌦
Rainy
Our opinion: Brussels has OK weather in December.

Average temperature in Brussels in December

Here are the expected maximum, average and minimum temperatures in Brussels for December based on the historical data.
Last Year
Historical Data

The temperature in December is +43°F on average, with a range between a maximum of +61°F during the day and a minimum of +19°F at night.

The average maximum temperature goes up 43% by the end of the month, compared with the beginning of the month, from +43°F to +61°F.

Is Brussels warm or cold in December?

Brussels is typically chill in December.

Maximum temperatures go down compared to the previous month from +50°F to +45°F. The minimum temperature also goes down from +41°F to +37°F.

Pack a jumper and a jacket as there will be cooler temperatures.

December is one of the coolest months in Brussels, here is the comparison with other months:

Climate in Brussels in December

Brussels weather looks like this, on average, in December and the surrounding months.
NovemberDecemberJanuary
Avg. temperature
+50°F+45°F+43°F
Min. temperature
+19°F+9°F-4°F
Max. temperature
+68°F+63°F+64°F
Rainfall
59 mm65 mm58 mm
Wind
3 m/s3 m/s4 m/s
Humidity
84%85%83%
Air pressure
1014 HPa1015 HPa1016 HPa
Sunny days
333
Cloudy days
191920
Rainy days
887
Snowy days
011

December weather is still as ok as in November. It’s getting colder in December. From +50°F in the day, the average maximum temperature lowers to +45°F. Prepare for more rain. Average rainfall goes from 59 mm to 65 mm. Humidity rises from 84% to 85%. The average wind speed doesn’t change much during December, staying around 3 m/s. The amount of sunny days stay about the same, averaging 3 sunny days during the month.

January brings much the same weather, it remains ok.

Wind

Wind speed in Brussels in December based on historical data.
Last Year
Historical Data

The average wind speed is 3 m/s getting up to 10 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Brussels is gradually increasing during December, going from 2 m/s to 10 m/s over the course of the month.

Rain

Amount of rainfall in mm during December in Brussels based on historical data.
Last Year
Historical Data
Typically, there is a 42% chance of rain on an average day in December, with total rainfall of approximately 77 mm. The maximum amount of rainfall per day is around 13 mm, which is considered light rain. December is a pretty wet month with over 13 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how December is compared with other months in the amount of precipitation, total mm:
Brussels wettest month is June, where a typical day has a 27% chance of precipitation and 71 mm of rainfall per day. April, on the other hand, is the driest month with a mere 23% chance of precipitation and 50 mm of rainfall per day.

Snow

Amount of snow in mm during December in Brussels based on historical data.
Last Year
Historical Data
The total snow in December is about 7 mm, with a 0% chance of snow on a typical day.

December is one of the snowiest months in Brussels.

Here’s how December is compared with other months in the amount of snow, total mm:

How was the weather last December in Brussels?

This is the weather in Brussels in December 2023:
1 December
☁️
+43°F
2 December
☁️
+41°F
3 December
☁️
+37°F
4 December
☁️
+35°F
5 December
🌧️
+41°F
6 December
☁️
+44°F
7 December
☁️
+44°F
8 December
☀️
+41°F
9 December
🌫️
+34°F
10 December
🌫️
+34°F
11 December
☁️
+35°F
12 December
☀️
+35°F
13 December
☀️
+31°F
14 December
☀️
+31°F
15 December
☀️
+36°F
16 December
🌫️
+35°F
17 December
☀️
+30°F
18 December
☀️
+36°F
19 December
🌧️
+53°F
20 December
🌧️
+53°F
21 December
☁️
+50°F
22 December
🌧️
+51°F
23 December
☁️
+56°F
24 December
☁️
+53°F
25 December
🌧️
+51°F
26 December
☁️
+50°F
27 December
☀️
+47°F
28 December
🌧️
+52°F
29 December
☁️
+53°F
30 December
🌧️
+57°F
31 December
🌧️
+62°F
In December 2023 Brussels had 8 sunny days, 12 cloudy days, and 7 rainy days. The average maximum temperature was +43°F, with an absolute maximum of +61°F and a minimum of +30°F. The average humidity was 88%, with a maximum of 100% and a minimum of 55%. The average wind speed was 3 m/s, with a maximum of 13 m/s and a minimum of 0 m/s.
Are you planning a trip in December?

Climate Change Over the Years

This is how Brussels climate has changed over the last 43 years.

The climate in Brussels in December has not changed that much over the last 43 years.

The average temperature was the lowest in 2010 (+35°F) and the highest in 2015 (+54°F). The driest year was 2005 with only 19 mm of rainfall, and the wettest year was 1993 with 179 mm.

FAQ

Frequently asked questions about the weather in Brussels in December:

Is December a good time to visit Brussels?

It’s always a good time to visit Brussels, but the weather is changeable in December, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Brussels in December?

Not really, December is not the best time to sunbathe, unless you visit a local solarium.

Is Brussels rainy in December?

Brussels is often rainy in December. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Brussels in December?

Usually, it’s not very sunny in Brussels in December, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Belgium

Check out the weather for other cities in Belgium.

Monthly weather in Brussels

Source of the data

For this page, we’ve looked at the typical weather in Brussels, based on historical hourly weather data from January 1, 1979, to December 31, 2022.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.