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December Weather in Mellier, Belgium

Last updated: August 22, 2025

In December, the average temperature in Mellier, Belgium hovers around 3°C (38°F). Temperatures can dip as low as -5°C (23°F) and reach a high of 14°C (57°F). Expect 149 mm (5.9 in) of precipitation over 20 days, accompanied by a high average humidity of 93%. Stay prepared for a chilly and damp month!

December Temperature in Mellier

In December in Mellier, the average temperature is 3°C (38°F). The maximum can reach 14°C (57°F) and the minimum can be as low as -5°C (23°F). Be sure to pack warm clothing and prepare for chilly conditions when traveling during this time.

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

The chart illustrates December temperature patterns in Mellier, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mellier, 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 (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec353842485463646458514138
Data source: Temperature data for Mellier 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 Mellier

In Mellier in December, the precipitation amount reaches 149 mm (5.9 in) over the course of 20 days.

December Precipitation Trends in Mellier

The chart displays monthly precipitation patterns in Mellier, 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 Mellier, December typically receives around 149 mm (5.9 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec92911034782847371739579149
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mellier

In Mellier 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 Mellier

This chart illustrates the average monthly humidity levels in Mellier, 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 Mellier 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 Mellier

In Mellier 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 Mellier.

Maximum UV Index Levels in Mellier for December

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

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

This table compares monthly weather conditions in Mellier, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)92 mm (3.6 inches)91%low
February Weather3°C (38°F)91 mm (3.6 inches)90%moderate
March Weather6°C (42°F)103 mm (4.1 inches)88%moderate
April Weather9°C (48°F)47 mm (1.8 inches)84%high
May Weather12°C (55°F)82 mm (3.2 inches)81%very high
June Weather17°C (63°F)84 mm (3.3 inches)82%very high
July Weather18°C (65°F)73 mm (2.9 inches)82%very high
August Weather18°C (65°F)71 mm (2.8 inches)80%very high
September Weather14°C (58°F)73 mm (2.9 inches)83%high
October Weather10°C (51°F)95 mm (3.8 inches)89%moderate
November Weather5°C (42°F)79 mm (3.1 inches)91%low
December Weather3°C (38°F)149 mm (5.9 inches)93%low

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