Lachen Weather & Climate: Best Time to Visit

Average temperatures, rainfall, sunshine and the best time to visit Lachen.

Climate overview of Lachen

Lachen, Canton of Schwyz, Switzerland, experiences significant temperature variation throughout the year. Summers bring daytime highs of 22°C (72°F) in July, while winters cool to 3°C (37°F) in January.

Rain/snowfall is high, totalling around 1831 mm (72 in) per year. June is the wettest month and January the driest. The city also experiences a distinct rainy season from May to August, with warm summers and cold winters. The sunniest month is July, with 7.7 hours of sunshine per day on average.

Lachen Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Lachen - and find the best time to visit.

Monthly Temperature in Lachen

Depending on the time of the year, temperatures range from comfortable to chilly in Lachen. Average maximum daytime temperatures range from a comfortable 22°C (72°F) in July, the warmest time of the year, to a chilly 3°C (37°F) during cooler months like January.

At night, you can expect temperatures ranging from 12°C (54°F) in July to around -4°C (25°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Lachen

Lachen has a relatively rain/snowy climate with high precipitation levels, averaging 1831 mm (72 in) of rain/snowfall annually. While rainfall varies throughout the year, each season offers its own charm. June brings wetter days averaging 209 mm (8.2 in) of precipitation, spread over 17 rainy days.

In contrast, the driest month January experiences a drier climate, with about 118 mm (4.6 in) of snow/rainfall spread across 15 snowy/rainy days. For more details, please visit our Lachen Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

Sunshine Hours in Lachen

Seasonal changes in sunshine hours are quite dramatic in Lachen. While July receives considerable daily sunshine with up to 7.7 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.6 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Zürich, Switzerland (30 KM, 18 Miles).

Daily hours of sunshine

Data from: Zürich, Switzerland (30 KM, 18 Miles).

Humidity in Lachen by Month

Best Time to Visit Lachen

Compared with the rest of the year, the most comfortable conditions in Lachen are usually found in July and September. Conditions are generally least comfortable in January, February, March, April, May, October, November and December.

Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.

  • Best overall: July and September
  • Warmest weather: July and August
  • Most sunshine: July
  • Seasonal pattern: A distinct rainy season from May to August, with warm summers and cold winters
  • Coldest conditions: January, with freezing nights around -4°C (25°F).

Frequently asked questions about the climate in Lachen

What is the best time to visit Lachen?

July and September typically offer the most optimal weather in Lachen. In contrast, January, February, March, April, May, October, November and December tend to have less optimal conditions. Lachen has a distinct rainy season from May to August, with warm summers and cold winters.

What temperatures can I expect in Lachen?

Daytime highs range from 3°C (37°F) in January to 22°C (72°F) in July. Nighttime lows range from -4°C (25°F) to 12°C (54°F). Temperatures vary considerably through the year.

How much rain does Lachen get?

Annual rainfall is around 1831 mm (72 in). June is the wettest month with 209 mm (8.2 in), while January is the driest with 118 mm (4.6 in).

How sunny is Lachen?

Lachen receives around 1,705 hours of sunshine per year. July is the sunniest month with 230 hours, while December is the cloudiest with just 48 hours.

Lachen 3-Day Forecast

Lachen on the map

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