December Weather in Mern, Denmark

Last updated: August 23, 2025

In December, the average temperature in Mern, Denmark hovers around 4°C (40°F), with minimums dipping as low as -4°C (26°F) and maximums reaching 9°C (49°F). Expect a fair amount of precipitation, with 68 mm (2.7 in) expected over 15 days, and a relatively high average humidity of 88%. Be prepared for a chilly, damp month!

December Temperature in Mern

In December in Mern, the average temperature is 4°C (40°F). The maximum can reach 9°C (49°F), while the minimum can be as low as -4°C (26°F). Be prepared for chilly weather when traveling to Mern during this time.

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

The chart illustrates December temperature patterns in Mern, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mern, December typically has an average temperature of 4°C (40°F), with highs reaching up to 9°C (49°F) and lows dropping to around -4°C (26°F).

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

December Precipitation in Mern

In Mern in December, the total precipitation amount is 68 mm (2.7 in) recorded over a span of 15 days.

December Precipitation Trends in Mern

The chart displays monthly precipitation patterns in Mern, 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 Mern, December typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 15 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in Mern

In Mern in December, humidity is 88%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration less enjoyable and prompting you to seek cozy indoor activities instead.

December Average Humidity in Mern

This chart illustrates the average monthly humidity levels in Mern, 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 Mern is approximately 88%, 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 Mern

In Mern 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 Mern.

Maximum UV Index Levels in Mern for December

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

Data source: Mern 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 Mern Compares to Other Months

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

This table compares monthly weather conditions in Mern, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	55 mm (2.2 inches)	90%	low
February Weather	3°C (38°F)	50 mm (2.0 inches)	89%	low
March Weather	4°C (39°F)	62 mm (2.5 inches)	88%	moderate
April Weather	7°C (45°F)	36 mm (1.4 inches)	85%	moderate
May Weather	11°C (53°F)	43 mm (1.7 inches)	80%	high
June Weather	17°C (62°F)	51 mm (2.0 inches)	77%	very high
July Weather	18°C (65°F)	70 mm (2.8 inches)	77%	high
August Weather	18°C (65°F)	84 mm (3.3 inches)	77%	high
September Weather	16°C (60°F)	67 mm (2.6 inches)	83%	moderate
October Weather	12°C (54°F)	95 mm (3.7 inches)	87%	moderate
November Weather	8°C (46°F)	52 mm (2.0 inches)	89%	low
December Weather	4°C (40°F)	68 mm (2.7 inches)	88%	low