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December Weather in Thuillies, Belgium

Last updated: August 22, 2025

In December, the average temperature in Thuillies, Belgium hovers around 5°C (41°F). Expect chilly conditions, with minimums dipping to -4°C (26°F) and maximums reaching up to 14°C (58°F). Precipitation is quite frequent, averaging 114 mm (4.5 in) over 18 days, and you'll notice a high humidity level of 92%. Be prepared for a damp and cool atmosphere!

December Temperature in Thuillies

In December in Thuillies, the average temperature is 5°C (41°F), with maximums reaching up to 14°C (58°F) and minimums dropping as low as -4°C (26°F). Travelers should prepare for chilly weather and pack accordingly to fully enjoy their time in Thuillies.

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

The chart illustrates December temperature patterns in Thuillies, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Thuillies, December typically has an average temperature of 5°C (41°F), with highs reaching up to 14°C (58°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec374044495563656559534441
Data source: Temperature data for Thuillies 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 Thuillies

In Thuillies in December, the precipitation amount is 114 mm (4.5 in) over the course of 18 days.

December Precipitation Trends in Thuillies

The chart displays monthly precipitation patterns in Thuillies, 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 Thuillies, December typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec7479834672707187629067114
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Thuillies

In Thuillies 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 Thuillies

This chart illustrates the average monthly humidity levels in Thuillies, 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 Thuillies is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%85%82%82%80%76%82%89%92%92%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Thuillies

In Thuillies 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 Thuillies.

Maximum UV Index Levels in Thuillies for December

The chart shows the monthly maximum UV Index (UVI) for Thuillies 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 Thuillies typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234578875421
Data source: Thuillies 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 Thuillies Compares to Other Months

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

This table compares monthly weather conditions in Thuillies, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)74 mm (2.9 inches)91%low
February Weather5°C (41°F)79 mm (3.1 inches)89%moderate
March Weather7°C (44°F)83 mm (3.3 inches)87%moderate
April Weather9°C (49°F)46 mm (1.8 inches)85%moderate
May Weather13°C (55°F)72 mm (2.8 inches)82%high
June Weather17°C (63°F)70 mm (2.8 inches)82%very high
July Weather18°C (65°F)71 mm (2.8 inches)80%very high
August Weather18°C (65°F)87 mm (3.4 inches)76%high
September Weather15°C (59°F)62 mm (2.4 inches)82%moderate
October Weather11°C (53°F)90 mm (3.5 inches)89%moderate
November Weather7°C (44°F)67 mm (2.6 inches)92%low
December Weather5°C (41°F)114 mm (4.5 inches)92%low

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