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December Weather in Kasterlee, Belgium

Last updated: August 22, 2025

In December, the average temperature in Kasterlee, Belgium hovers around 5°C (42°F). Expect a chilly range where the minimum can dip to -5°C (23°F), while highs may reach 15°C (60°F). This month also brings a fair share of precipitation, with about 95 mm (3.7 in) falling over 16 days, contributing to a notably high average humidity of 92%.

December Temperature in Kasterlee

In December in Kasterlee, the average temperature is 5°C (42°F). Maximums can reach 15°C (60°F), and minimums can be as low as -5°C (23°F). Be prepared for chilly weather and pack layers to stay comfortable while exploring the area.

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

The chart illustrates December temperature patterns in Kasterlee, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kasterlee, December typically has an average temperature of 5°C (42°F), with highs reaching up to 15°C (60°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec394145505765666660544542
Data source: Temperature data for Kasterlee 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 Kasterlee

In Kasterlee in December, the precipitation amount is 95 mm (3.7 in) spread over 16 days.

December Precipitation Trends in Kasterlee

The chart displays monthly precipitation patterns in Kasterlee, 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 Kasterlee, December typically receives around 95 mm (3.7 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec657475386869818158875795
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Kasterlee

In Kasterlee in December, humidity is 92%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel less enjoyable.

December Average Humidity in Kasterlee

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

In Kasterlee 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 Kasterlee.

Maximum UV Index Levels in Kasterlee for December

The chart shows the monthly maximum UV Index (UVI) for Kasterlee 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 Kasterlee typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Kasterlee 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 Kasterlee Compares to Other Months

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

This table compares monthly weather conditions in Kasterlee, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)65 mm (2.5 inches)91%low
February Weather5°C (42°F)74 mm (2.9 inches)89%low
March Weather7°C (45°F)75 mm (3.0 inches)87%moderate
April Weather10°C (51°F)37 mm (1.5 inches)85%moderate
May Weather14°C (57°F)68 mm (2.7 inches)82%high
June Weather19°C (66°F)69 mm (2.7 inches)82%very high
July Weather19°C (67°F)81 mm (3.2 inches)80%very high
August Weather19°C (66°F)81 mm (3.2 inches)76%high
September Weather15°C (60°F)58 mm (2.3 inches)82%moderate
October Weather12°C (54°F)87 mm (3.4 inches)89%moderate
November Weather7°C (45°F)57 mm (2.3 inches)92%low
December Weather5°C (42°F)95 mm (3.7 inches)92%low

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