The best time of the year to visit the city is between June until August which is the summer. During this time the temperatures reaches 70s, which makes swimming possible. However, this is also the most expensive time to visit because of the temperatures as it is the peak tourist season.
The winter is also an expensive time to visit the city because the Alps are one of the most popular skiing destinations in the winter. It is between October and February. Temperatures dip to a low of 15 degrees Celsius.