Aargau is one of several regions in Switzerland, with temperatures that range from 5°C (41°F) in January to 25°C (77°F) during the peak of July. We've based our full climate overview on data from Baden, the region's most prominent city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
In Aargau, during the months of May, June, July, August and September you can expect comfortable weather, with average temperatures ranging from 20°C (68°F) to 25°C (77°F).
The coldest months generally fall in January, February, November and December.
Precipitation in Aargau varies considerably throughout the year. The wettest conditions occur in July with 143 mm (5.6 in) of rain, while February stays relatively dry with 80 mm (3.1 in).
Visitors hoping to maximize their time in the sun should consider planning their trip for July, when daylight hours are at their peak.
