December Weather in Olmen, Belgium

Last updated: August 22, 2025

In Olmen, Belgium, the average temperature in December hovers around 5°C (42°F), with a minimum dipping as low as -5°C (23°F) and a blissful maximum reaching 15°C (60°F). You can expect 94 mm (3.7 in) of precipitation spread over approximately 16 days, contributing to the region's high average humidity of 92%. Stay prepared for a damp and chilly month!

December Temperature in Olmen

In December in Olmen, 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 Olmen: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Olmen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Olmen, 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).

Data source: Temperature data for Olmen generated using information from the Copernicus Climate Change Service.

December Precipitation in Olmen

In Olmen in December, the precipitation amount is 94 mm (3.7 in) over a span of 16 days.

December Precipitation Trends in Olmen

The chart displays monthly precipitation patterns in Olmen, 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 Olmen, December typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 16 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Olmen

In Olmen 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 Olmen

This chart illustrates the average monthly humidity levels in Olmen, 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 Olmen is approximately 92%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Olmen

In Olmen 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 Olmen.

Maximum UV Index Levels in Olmen for December

The chart shows the monthly maximum UV Index (UVI) for Olmen 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 Olmen typically reaches 1, which falls under the low exposure category.

Data source: Olmen 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 Olmen Compares to Other Months

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

This table compares monthly weather conditions in Olmen, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	65 mm (2.6 inches)	91%	low
February Weather	5°C (42°F)	74 mm (2.9 inches)	90%	low
March Weather	7°C (45°F)	74 mm (2.9 inches)	87%	moderate
April Weather	10°C (51°F)	37 mm (1.5 inches)	84%	moderate
May Weather	14°C (57°F)	68 mm (2.7 inches)	77%	high
June Weather	19°C (66°F)	73 mm (2.9 inches)	74%	very high
July Weather	19°C (67°F)	81 mm (3.2 inches)	72%	very high
August Weather	19°C (67°F)	79 mm (3.1 inches)	71%	high
September Weather	15°C (60°F)	60 mm (2.4 inches)	81%	moderate
October Weather	12°C (54°F)	89 mm (3.5 inches)	88%	moderate
November Weather	7°C (45°F)	56 mm (2.2 inches)	91%	low
December Weather	5°C (42°F)	94 mm (3.7 inches)	92%	low