January Weather in Unna, Germany

Last updated: August 23, 2025

In January, the average temperature in Unna, Germany hovers around 3°C (38°F). Expect chilly days where the temperature can plummet to a minimum of -9°C (16°F) or rise to a maximum of 14°C (58°F). With an average precipitation of 80 mm (3.1 in) spread over 14 days, you'll want to prepare for a bit of rain. Plus, the air tends to be quite humid, with an average humidity of 92%, contributing to a distinctly damp atmosphere.

January Temperature in Unna

In January in Unna, the average temperature is 3°C (38°F). Maximum temperatures can reach up to 14°C (58°F), while minimums can drop as low as -9°C (16°F). Be sure to pack warm clothing and prepare for chilly conditions if you plan to travel during this time.

January Weather in Unna: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Unna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Unna, January typically has an average temperature of 3°C (38°F), with highs reaching up to 14°C (58°F) and lows dropping to around -9°C (16°F).

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

January Precipitation in Unna

In Unna in January, the precipitation amount is 80 mm (3.1 in) and is distributed over 14 days.

January Precipitation Trends in Unna

The chart displays monthly precipitation patterns in Unna, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Unna, January typically receives around 80 mm (3.1 inches) of precipitation spread over approximately 14 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Unna

In Unna in January humidity is 92%. With an average temperature of 3°C (38°F), this humidity feels like a wet chill that seeps into your bones, making outdoor activities uncomfortable and travel arrangements challenging.

January Average Humidity in Unna

This chart illustrates the average monthly humidity levels in Unna, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Unna is approximately 92%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Unna

In Unna in January, 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 Unna.

Maximum UV Index Levels in Unna for January

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

Data source: Unna January 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 January Weather in Unna Compares to Other Months

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

This table compares monthly weather conditions in Unna, showing how January’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 (3.1 inches)	92%	low
February Weather	4°C (40°F)	82 mm (3.2 inches)	90%	low
March Weather	6°C (44°F)	84 mm (3.3 inches)	87%	moderate
April Weather	10°C (50°F)	42 mm (1.6 inches)	83%	moderate
May Weather	13°C (56°F)	73 mm (2.9 inches)	76%	high
June Weather	18°C (65°F)	67 mm (2.6 inches)	74%	very high
July Weather	19°C (66°F)	93 mm (3.7 inches)	74%	very high
August Weather	19°C (66°F)	80 mm (3.1 inches)	75%	high
September Weather	15°C (59°F)	63 mm (2.5 inches)	82%	moderate
October Weather	12°C (53°F)	91 mm (3.6 inches)	88%	moderate
November Weather	7°C (44°F)	57 mm (2.3 inches)	90%	low
December Weather	5°C (40°F)	102 mm (4.0 inches)	92%	low