Altdorf Weather & Climate: Best Time to Visit

In Altdorf, temperatures differ significantly between summer and winter months. Average maximum daytime temperatures range from a comfortable 26°C (79°F) in July, the warmest time of the year, to a chilly 4°C (39°F) during cooler months like January.

At night, you can expect temperatures ranging from 15°C (59°F) in July to around -2°C (28°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

On average, Altdorf receives a reasonable amount of rain/snowfall, with an annual precipitation of 973 mm (38 in). While rainfall varies throughout the year, each season offers its own charm. July brings wetter days averaging 110 mm (4.3 in) of precipitation, spread over 15 rainy days.

In contrast, the driest month February experiences a drier climate, with about 60 mm (2.4 in) of snow/rainfall spread across 15 snowy/rainy days. For more details, please visit our Altdorf Precipitation page.

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

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Altdorf. While July receives considerable daily sunshine with up to 7.9 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.9 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Altdorf.

The city experiences its highest humidity in November, reaching 86%. In April, the humidity drops to its lowest level at 72%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year