December Weather in Heiden, Germany

Last updated: August 23, 2025

In December, the average temperature in Heiden, Germany hovers around 5°C (41°F). Expect the mercury to drop to a chilly -5°C (23°F) at times, while highs can reach a pleasant 15°C (59°F). Be prepared for some rain, as 99 mm (3.9 in) of precipitation is likely over 17 days. With an average humidity of 92%, the air can feel quite damp, adding to the unique atmosphere of the season.

December Temperature in Heiden

In December in Heiden, the average temperature is 5°C (41°F). The maximum can reach 15°C (59°F), while the minimum can drop as low as -5°C (23°F). It’s advisable to pack layered clothing to stay comfortable while exploring the area.

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

The chart illustrates December temperature patterns in Heiden, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Heiden, 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 -5°C (23°F).

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

December Precipitation in Heiden

In Heiden in December, the precipitation amount is 99 mm (3.9 in) over a span of 17 days.

December Precipitation Trends in Heiden

The chart displays monthly precipitation patterns in Heiden, 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 Heiden, December typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 17 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 Heiden

In Heiden 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 Heiden

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

In Heiden 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 Heiden.

Maximum UV Index Levels in Heiden for December

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

Data source: Heiden 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 Heiden Compares to Other Months

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

This table compares monthly weather conditions in Heiden, 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)	73 mm (2.9 inches)	91%	low
February Weather	5°C (41°F)	81 mm (3.2 inches)	90%	low
March Weather	7°C (45°F)	76 mm (3.0 inches)	87%	moderate
April Weather	10°C (50°F)	35 mm (1.4 inches)	84%	moderate
May Weather	14°C (57°F)	60 mm (2.4 inches)	77%	high
June Weather	19°C (66°F)	59 mm (2.3 inches)	74%	very high
July Weather	19°C (67°F)	83 mm (3.3 inches)	72%	very high
August Weather	19°C (67°F)	71 mm (2.8 inches)	71%	high
September Weather	15°C (60°F)	62 mm (2.4 inches)	81%	moderate
October Weather	12°C (54°F)	92 mm (3.6 inches)	88%	moderate
November Weather	7°C (45°F)	55 mm (2.1 inches)	91%	low
December Weather	5°C (41°F)	99 mm (3.9 inches)	92%	low