Lachen is a city of approximately 8,800 people in Schwyz, Switzerland. Located in the Europe/Zurich time zone at 47.2°N latitude.
In 2025, Lachen recorded an average annual temperature of 52°F. The hottest temperatures reached 91°F in August; the coolest were 19°F in November. Total precipitation for the year was 62 inches, with the wettest month being July. Snowfall for the year totaled approximately 11 inches.
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