With a population of around 2,000, Gersau sits in Schwyz, Switzerland. The city operates in the Europe/Zurich time zone.
In 2025, Gersau recorded an average annual temperature of 52°F. The hottest temperatures reached 90°F in August; the coolest were 24°F in January. Total precipitation for the year was 61 inches, with the wettest month being July. Snowfall for the year totaled approximately 8 inches.
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