December Weather in Hayn, Germany

Last updated: August 23, 2025

In Hayn, Germany, the average temperature in December hovers around 2°C (37°F). Expect chilly nights, with minimums plummeting to -12°C (11°F), while daytime highs can reach a cozy 13°C (55°F). Rain is likely, with 58 mm (2.3 in) of precipitation spread over 14 days, contributing to an average humidity level of 92%.

December Temperature in Hayn

In December in Hayn, the average temperature is 2°C (37°F). The maximum can reach 13°C (55°F), while the minimum can drop as low as -12°C (11°F). It's advisable to dress in layers and be prepared for chilly weather if you're planning to travel during this time.

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

The chart illustrates December temperature patterns in Hayn, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hayn, December typically has an average temperature of 2°C (37°F), with highs reaching up to 13°C (55°F) and lows dropping to around -12°C (11°F).

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

December Precipitation in Hayn

In Hayn in December, the precipitation amount is 58 mm (2.3 in) over the course of 14 days.

December Precipitation Trends in Hayn

The chart displays monthly precipitation patterns in Hayn, 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 Hayn, December typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 14 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 Hayn

In Hayn in December humidity is 92%. With an average temperature of 2°C (37°F), this humidity feels like a chilling embrace that clings to your skin, making every step feel heavier and wrapping you in a damp shroud, which can be quite uncomfortable for traveling.

December Average Humidity in Hayn

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

In Hayn 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 Hayn.

Maximum UV Index Levels in Hayn for December

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

Data source: Hayn 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 Hayn Compares to Other Months

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

This table compares monthly weather conditions in Hayn, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	50 mm (2.0 inches)	91%	low
February Weather	2°C (35°F)	53 mm (2.1 inches)	90%	low
March Weather	4°C (40°F)	55 mm (2.1 inches)	88%	moderate
April Weather	8°C (47°F)	37 mm (1.4 inches)	83%	moderate
May Weather	12°C (54°F)	66 mm (2.6 inches)	75%	high
June Weather	18°C (64°F)	68 mm (2.7 inches)	79%	very high
July Weather	18°C (65°F)	69 mm (2.7 inches)	79%	very high
August Weather	19°C (66°F)	69 mm (2.7 inches)	79%	high
September Weather	14°C (58°F)	51 mm (2.0 inches)	83%	high
October Weather	10°C (51°F)	55 mm (2.2 inches)	87%	moderate
November Weather	5°C (41°F)	37 mm (1.5 inches)	90%	low
December Weather	2°C (37°F)	58 mm (2.3 inches)	92%	low