December Weather in Giessen, Germany

Last updated: August 23, 2025

The average temperature in Giessen, Germany during December is a brisk 4°C (39°F). Expect chilly days, with minimum temperatures dropping as low as -7°C (20°F) and maximums reaching up to 14°C (58°F). Be prepared for rain, as the region experiences an average precipitation of 95 mm (3.7 in) over 16 days, contributing to an overall humidity level of 92%.

December Temperature in Giessen

In December in Giessen, the average temperature is 4°C (39°F), with maximums reaching 14°C (58°F) and minimums dropping as low as -7°C (20°F). It's essential to pack warm clothing and prepare for chilly weather if you're planning to travel during this time.

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

The chart illustrates December temperature patterns in Giessen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Giessen, December typically has an average temperature of 4°C (39°F), with highs reaching up to 14°C (58°F) and lows dropping to around -7°C (20°F).

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

December Precipitation in Giessen

In Giessen in December, the precipitation amount is 95 mm (3.7 in) spread over 16 days.

December Precipitation Trends in Giessen

The chart displays monthly precipitation patterns in Giessen, 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 Giessen, December typically receives around 95 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.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in Giessen

In Giessen in December humidity is 92%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and travel feel burdensome as you navigate through the thick, muggy air.

December Average Humidity in Giessen

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

In Giessen 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 Giessen.

Maximum UV Index Levels in Giessen for December

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

Data source: Giessen 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 Giessen Compares to Other Months

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

This table compares monthly weather conditions in Giessen, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	62 mm (2.4 inches)	92%	low
February Weather	3°C (38°F)	54 mm (2.1 inches)	90%	low
March Weather	6°C (43°F)	66 mm (2.6 inches)	87%	moderate
April Weather	10°C (50°F)	36 mm (1.4 inches)	83%	moderate
May Weather	13°C (56°F)	73 mm (2.9 inches)	76%	high
June Weather	19°C (66°F)	64 mm (2.5 inches)	74%	very high
July Weather	19°C (67°F)	68 mm (2.7 inches)	74%	very high
August Weather	20°C (67°F)	64 mm (2.5 inches)	75%	high
September Weather	15°C (60°F)	41 mm (1.6 inches)	82%	moderate
October Weather	11°C (52°F)	54 mm (2.1 inches)	88%	moderate
November Weather	6°C (42°F)	47 mm (1.9 inches)	90%	low
December Weather	4°C (39°F)	95 mm (3.7 inches)	92%	low