Aachen Weather & Climate: Best Time to Visit

Monthly Temperature in Aachen

Depending on the time of the year, temperatures range from comfortable to chilly in Aachen. Average daytime temperatures reach a comfortable 24°C (75°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 6°C (43°F).

At night, temperatures range from around 14°C (57°F) in July to 1°C (34°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Aachen

Generally, Aachen has a moderate amount of precipitation, averaging 936 mm (37 in) of rain/snowfall annually. Despite minor fluctuations, Aachen enjoys fairly consistent precipitation throughout the year. In December, you can expect around 90 mm (3.5 in) of precipitation, while in April, Aachen receives about 62 mm (2.4 in). For more details, please visit our Aachen Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Sunshine Hours in Aachen

Aachen can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 7.0 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.8 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

Humidity in Aachen by Month

The relative humidity is high throughout the year in Aachen.

The city experiences its highest humidity in December, reaching 88%. In April, the humidity drops to its lowest level at 71%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year