January Weather in Aach, Germany

Last updated: August 23, 2025

In January, the average temperature in Aach, Germany hovers around 2°C (35°F). Expect chilly days, with a minimum temperature plummeting to -13°C (9°F) and a maximum reaching up to 12°C (53°F). Be prepared for some wet weather as well, with an average precipitation amount of 77 mm (3.0 in) over 12 days, and don't forget to brace yourself for a high humidity level of 91%.

January Temperature in Aach

In January in Aach, the average temperature is 2°C (35°F). The maximum can reach 12°C (53°F), while the minimum can drop as low as -13°C (9°F). Travelers should be prepared for chilly conditions and consider packing warm clothing for their visit.

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

The chart illustrates January temperature patterns in Aach, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Aach, January typically has an average temperature of 2°C (35°F), with highs reaching up to 12°C (53°F) and lows dropping to around -13°C (9°F).

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

January Precipitation in Aach

In Aach in January, the precipitation amount is 77 mm (3.0 in) spread over 12 days.

January Precipitation Trends in Aach

The chart displays monthly precipitation patterns in Aach, 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 Aach, January typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 12 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Aach

In Aach in January, humidity is 91%. With an average temperature of 2°C (35°F), this humidity feels like a heavy blanket enveloping you, making travel rather uncomfortable and potentially discouraging for outdoor activities.

January Average Humidity in Aach

This chart illustrates the average monthly humidity levels in Aach, 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 Aach is approximately 91%, 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 Aach

In Aach in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Aach, you can visit Hourly UV Index in Aach.

Maximum UV Index Levels in Aach for January

The chart shows the monthly maximum UV Index (UVI) for Aach 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 Aach typically reaches 2, which falls under the low exposure category.

Data source: Aach 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 Aach Compares to Other Months

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

This table compares monthly weather conditions in Aach, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (35°F)	77 mm (3.0 inches)	91%	low
February Weather	3°C (38°F)	80 mm (3.1 inches)	90%	moderate
March Weather	6°C (43°F)	91 mm (3.6 inches)	88%	moderate
April Weather	9°C (49°F)	43 mm (1.7 inches)	84%	high
May Weather	13°C (55°F)	79 mm (3.1 inches)	81%	very high
June Weather	18°C (64°F)	76 mm (3.0 inches)	82%	very high
July Weather	19°C (66°F)	73 mm (2.9 inches)	82%	very high
August Weather	18°C (65°F)	65 mm (2.6 inches)	80%	high
September Weather	14°C (58°F)	64 mm (2.5 inches)	83%	high
October Weather	10°C (51°F)	79 mm (3.1 inches)	89%	moderate
November Weather	5°C (42°F)	71 mm (2.8 inches)	91%	low
December Weather	4°C (39°F)	131 mm (5.2 inches)	93%	low