December Weather in Herne, Germany

Last updated: August 23, 2025

In December, the average temperature in Herne, Germany is a brisk 5°C (41°F). Expect a range that dips to a chilly -6°C (22°F) and peaks at a mild 15°C (59°F). This month typically brings about 108 mm (4.2 in) of precipitation over 20 days, contributing to an average humidity of 92%. Be prepared for a mix of cool temperatures and frequent rain!

December Temperature in Herne

In December in Herne, the average temperature is 5°C (41°F). Maximums can reach 15°C (59°F), and minimums can be as low as -6°C (22°F). Travelers should prepare for chilly conditions and pack layers to stay comfortable throughout the day.

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

The chart illustrates December temperature patterns in Herne, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Herne, December typically has an average temperature of 5°C (41°F), with highs reaching up to 15°C (59°F) and lows dropping to around -6°C (22°F).

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

December Precipitation in Herne

In Herne in December, the total precipitation amount is 108 mm (4.2 in) spread over 20 days.

December Precipitation Trends in Herne

The chart displays monthly precipitation patterns in Herne, 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 Herne, December typically receives around 108 mm (4.2 inches) of precipitation spread over approximately 20 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 Herne

In Herne 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 Herne

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

In Herne 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 Herne.

Maximum UV Index Levels in Herne for December

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

Data source: Herne 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 Herne Compares to Other Months

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

This table compares monthly weather conditions in Herne, 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)	80 mm (3.2 inches)	91%	low
February Weather	4°C (40°F)	85 mm (3.4 inches)	90%	low
March Weather	7°C (44°F)	85 mm (3.4 inches)	87%	moderate
April Weather	10°C (50°F)	39 mm (1.5 inches)	84%	moderate
May Weather	14°C (57°F)	70 mm (2.7 inches)	77%	high
June Weather	19°C (66°F)	67 mm (2.6 inches)	74%	very high
July Weather	19°C (66°F)	98 mm (3.9 inches)	72%	very high
August Weather	19°C (66°F)	77 mm (3.0 inches)	71%	high
September Weather	15°C (59°F)	67 mm (2.6 inches)	81%	moderate
October Weather	12°C (53°F)	97 mm (3.8 inches)	88%	moderate
November Weather	7°C (44°F)	59 mm (2.3 inches)	91%	low
December Weather	5°C (41°F)	108 mm (4.2 inches)	92%	low