Belgium - weather in December

In December, the first winter month, the climate in Belgium is quite cold, grey and wet on the coast and in the plains, while in the south-east, in the Ardennes, it is colder.

The average daily temperature is 5 °C (41 °F) on the coast (see Ostend), and slightly lower in the plains (see Brussels, Antwerp), while it drops to 1.5 °C (35 °F) in the Ardennes, for example in Bastogne, Spa and Saint-Hubert, which are located further from the sea and at about 500 meters (1,600 feet) above sea level.

On the coast and in the plains, precipitation is frequent, and usually occurs in the form of rain. December in Belgium is the wettest month of the year.
In the Ardennes, precipitation is more frequent and abundant, in addition, it occurs quite often in the form of snow. However, it can sometimes snow even in the plains.

During cold waves, which are becoming rarer due to global warming, the temperature can drop to -6/-7 °C (19/21 °F), and sometimes below.
On the other hand, on milder days, which can be windy, the temperature can reach 12/13 °C (54/55 °F), and sometimes exceed them, at least in the plains.

As mentioned, the wind blows quite often, and can sometimes be strong.

The sun is rarely seen: the sky is often cloudy.

During the month, the length of the days gradually decreases until December 21, the winter solstice, which is the shortest day of the year in the northern hemisphere. In December, the average day in Belgium is 8 hours long.

The following tables show the climate averages in the month of December in Belgium in a selection of locations.

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Monthly climate averages - December

(from north to south)











See also: Belgium, the weather in November - January
The climate of Belgium