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December Weather in Arlon, Belgium

Last updated: August 22, 2025

In December, the average temperature in Arlon, Belgium hovers around 3°C (38°F). During this time, temperatures can dip as low as -5°C (24°F), while occasionally reaching a high of 14°C (57°F). Expect some rain, with an average precipitation of 136 mm (5.3 in) spread over 19 days, contributing to a high average humidity of 93%.

December Temperature in Arlon

In December in Arlon, the average temperature is 3°C (38°F). Maximum temperatures can reach 14°C (57°F), while minimums can drop to as low as -5°C (24°F). Travelers should be prepared for chilly conditions and varying temperatures during this time.

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

The chart illustrates December temperature patterns in Arlon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arlon, December typically has an average temperature of 3°C (38°F), with highs reaching up to 14°C (57°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec353842485463646457504138
Data source: Temperature data for Arlon 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 Arlon

In Arlon in December, the precipitation amount is 136 mm (5.3 in) spread over 19 days.

December Precipitation Trends in Arlon

The chart displays monthly precipitation patterns in Arlon, 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 Arlon, December typically receives around 136 mm (5.3 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec8184934682887672728974136
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Arlon

In Arlon in December, humidity is 93%. With an average temperature of 3°C (38°F), this humidity feels like a thick, chilly fog that clings to your skin, making every step outdoors feel heavier and more exhausting, which can be quite uninviting for travelers.

December Average Humidity in Arlon

This chart illustrates the average monthly humidity levels in Arlon, 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 Arlon is approximately 93%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%88%84%81%82%82%80%83%89%91%93%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Arlon

In Arlon 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 Arlon.

Maximum UV Index Levels in Arlon for December

The chart shows the monthly maximum UV Index (UVI) for Arlon 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 Arlon typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234689886421
Data source: Arlon 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 Arlon Compares to Other Months

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

This table compares monthly weather conditions in Arlon, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)81 mm (3.2 inches)91%low
February Weather3°C (38°F)84 mm (3.3 inches)90%moderate
March Weather6°C (42°F)93 mm (3.7 inches)88%moderate
April Weather9°C (48°F)46 mm (1.8 inches)84%high
May Weather12°C (55°F)81 mm (3.2 inches)81%very high
June Weather17°C (63°F)88 mm (3.5 inches)82%very high
July Weather18°C (65°F)76 mm (3.0 inches)82%very high
August Weather18°C (64°F)72 mm (2.8 inches)80%very high
September Weather14°C (58°F)72 mm (2.8 inches)83%high
October Weather10°C (51°F)89 mm (3.5 inches)89%moderate
November Weather5°C (42°F)74 mm (2.9 inches)91%low
December Weather3°C (38°F)136 mm (5.3 inches)93%low

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