December weather forecast
Leuven, Belgium

December

Weather in December

December ushers in the full vigor of winter in Leuven. Being the coldest month, the temperature variation begins from a chilly 2.4°C (36.3°F) rising to only 6.3°C (43.3°F). Conferring the most rain, December records rainfall of 57mm (2.24") over approximately 18.5 days. It's also marked by return of the snowfall, clocking in at around 22mm (0.87") during 2.6 snow-filled days. Coupled with longer nights and limited daylight, the climatic extremities make December a truly wintry month.

Temperature

The commencement of December indicates a gentle shift in the average high-temperature, receding from November's 9.6°C (49.3°F) to a still chilly 6.3°C (43.3°F). In Leuven, December is characterized by an average low-temperature of 2.4°C (36.3°F), indicating a minor drop from daytime highs.

Humidity

With an average relative humidity of 88%, December is the most humid month.

Rainfall

December is the month with the most rainfall. Rain falls for 18.5 days and accumulates 57mm (2.24") of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In December, it is snowing for 2.6 days. Throughout December, 22mm (0.87") of snow is accumulated. In Leuven, during the entire year, snow falls for 14.4 days and aggregates up to 108mm (4.25") of snow.

Daylight

December has the shortest days of the year, with an average of 8h and 0min of daylight.
On the first day of the month, sunrise is at 08:22 and sunset at 16:38. On the last day of December, sunrise is at 08:43 and sunset at 16:45 CET.

Sunshine

December has the least sunshine of the year, with an average of 3.8h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.
Note: A daily high UV index of 2 in December leads to these guidelines:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

How cold does it get in December?
The average high-temperature and low-temperature during December are 6.3°C (43.3°F) and 2.4°C (36.3°F) respectively.
What is the most humid month in Leuven?
December is the most humid month, with an average relative humidity of 88%.
What is the average humidity in December?
In Leuven, the average relative humidity in December is 88%.
What is the rainiest month?
December is the month with the most rainfall. Rain falls for 18.5 days and accumulates 57mm (2.24") of precipitation.
How many days does it rain in December?
In December, the rain falls for 18.5 days. Throughout December, 57mm (2.24") of precipitation is accumulated.
How many days does it snow in December?
In Leuven, in December, during 2.6 snowfall days, 22mm (0.87") of snow is typically accumulated.
What is the month with the shortest days?
With an average of 8h and 0min of daylight, December has the shortest days of the year.
What is the average length of the day in December?
The average day length in December is 8h and 2min.
When is the sunrise / sunset in December?
On the first day of December, sunrise is at 08:22 and sunset at 16:38. On the last day of the month, sunrise is at 08:43 and sunset at 16:45 CET.
What is the month with the least sunshine?
December has the least sunshine of the year, with an average of 3.8h of sunshine.
How long on average sun shines in December?
In Leuven, the average sunshine duration in December is 3.8h.
What are the months with the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
How high is the UV index in December?
In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Leuven, Belgium
  • Average high temperature in December: 6.3°C

The warmest month (with the highest average high temperature) is July (23.2°C).
The month with the lowest average high temperature is January (4.9°C).

  • Average low temperature in December: 2.4°C

The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is January (1°C).

Average pressure in December
Leuven, Belgium
  • Average pressure in December: 1016.3mbar

The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1012.5mbar).

Average wind speed in December
Leuven, Belgium
  • Average wind speed in December: 18.1km/h

The windiest month (with the highest average wind speed) is December (18.1km/h).
The calmest month (with the lowest average wind speed) is August (11.7km/h).

Average humidity in December
Leuven, Belgium
  • Average humidity in December: 88%

The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (74%).

Average rainfall in December
Leuven, Belgium
  • Average rainfall in December: 57mm

The wettest month (with the highest rainfall) is December (57mm).
The driest month (with the least rainfall) is September (16mm).

Average rainfall days in December
Leuven, Belgium
  • Average rainfall days in December: 18.5 days

The month with the highest number of rainy days is December (18.5 days).
The month with the least rainy days is September (8.5 days).

Average snowfall in December
Leuven, Belgium
  • Average snowfall in December: 22mm

The month with the highest snowfall is February (41mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in December
Leuven, Belgium
  • Average snowfall days in December: 2.6 days

The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Leuven, Belgium
  • Average daylight in December: 8h and 0min

The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 0min).

  • Average sunshine in December: 3h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).

Average sunshine days in December
Leuven, Belgium
  • Average sunshine days in December: 9 days

The month with the most sunshine days is September (20.1 days).
The month with the least sunshine days is February (8.7 days).

Average UV index in December
Leuven, Belgium
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Leuven, Belgium
  • Average cloud cover in December: 62

The month with the most cloud cover is December (Cloud cover 62).
The months with the least cloud cover are April and August (Cloud cover 41).

Average visibility in December
Leuven, Belgium
  • Average visibility in December: 9km

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is January (8km).

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