Switzerland has mild summers and cold winters. Temperatures in Zurich range from a summer average of 24°C to a winter average of-5°C. Being on the Lake of Zurich, the city is subjected to lake breezes and humidity.
The cold winter (wintertime from December to March) does not necessarily mean constant snow; in fact snowfalls are few and far between. Summertime (from June to August) and fall (September to November) brings unexpected rain showers, so an umbrella and light raincoat are recommended.