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December Weather in Alleur, Belgium

Last updated: August 22, 2025

In December, the average temperature in Alleur, Belgium hovers around 5°C (41°F). Expect chilly conditions with a minimum dropping to -5°C (23°F) and a maximum reaching 15°C (59°F). Be prepared for 106 mm (4.2 in) of precipitation over 19 days, and note the high average humidity of 92% that adds to the cool atmosphere.

December Temperature in Alleur

In December in Alleur, the average temperature is 5°C (41°F). The maximum can reach 15°C (59°F), while the minimum can drop as low as -5°C (23°F). It’s advisable to pack layered clothing to stay comfortable while exploring the area.

December Weather in Alleur: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Alleur, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alleur, December typically has an average temperature of 5°C (41°F), with highs reaching up to 15°C (59°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec384145505665666659534441
Data source: Temperature data for Alleur generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Alleur

In Alleur in December, the precipitation amount is 106 mm (4.2 in) over the course of 19 days.

December Precipitation Trends in Alleur

The chart displays monthly precipitation patterns in Alleur, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Alleur, December typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec7176803965888284658758106
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Alleur

In Alleur in December humidity is 92%. With an average temperature of 5°C (41°F), this humidity feels like a cold, damp blanket enveloping you, making travel uncomfortable and dampening the spirits of those unprepared for the chill.

December Average Humidity in Alleur

This chart illustrates the average monthly humidity levels in Alleur, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Alleur is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%87%84%77%74%72%71%81%88%91%92%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Alleur

In Alleur in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Alleur.

Maximum UV Index Levels in Alleur for December

The chart shows the monthly maximum UV Index (UVI) for Alleur in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Alleur typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Alleur December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Alleur Compares to Other Months

Weather in Alleur varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Alleur, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Alleur, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)71 mm (2.8 inches)91%low
February Weather5°C (41°F)76 mm (3.0 inches)90%low
March Weather7°C (45°F)80 mm (3.1 inches)87%moderate
April Weather10°C (50°F)39 mm (1.5 inches)84%moderate
May Weather14°C (57°F)65 mm (2.5 inches)77%high
June Weather18°C (65°F)88 mm (3.5 inches)74%very high
July Weather19°C (66°F)82 mm (3.2 inches)72%very high
August Weather19°C (66°F)84 mm (3.3 inches)71%high
September Weather15°C (60°F)65 mm (2.5 inches)81%moderate
October Weather12°C (54°F)87 mm (3.4 inches)88%moderate
November Weather7°C (45°F)58 mm (2.3 inches)91%low
December Weather5°C (41°F)106 mm (4.2 inches)92%low

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