Climate Overview
The climate in Zweisimmen is cool. The average annual temperature is 6°C and approximately 1876mm of precipitation falls per year. Zweisimmen receives a notable amount of rainfall throughout the year, including during its driest month. Zweisimmen is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, December, February, when temperatures can drop to -8°C. Zweisimmen experiences heavy snowfall, typically from January through December.
Temperature
Temperatures in Zweisimmen vary considerably across the year, with a 29°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 21°C with a mean of 15°C. The coldest month is January, when overnight lows fall to -8°C and the daily average is -4°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.
Precipitation
Zweisimmen is a fairly wet location, receiving approximately 1876mm of precipitation annually, which averages out to around 156mm per month. The wettest month is May, averaging 204mm of rainfall. July and June also tend to see above-average precipitation. The driest month is February, with just 112mm. That's 92mm less than May, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Zweisimmen receives heavy snowfall, accumulating around 576cm annually from January through December. The snowiest month is January, with approximately 125cm. Winter travel should account for significant snow cover.
Wind
Zweisimmen is relatively calm, with an average annual wind speed of 5km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.
Seasons
87 days until Winter
It is currently autumn in Zweisimmen, which began on September 23, 2026. Zweisimmen is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 21°C, while the coldest stretch bottoms out in January near -8°C. Winter is next, beginning on December 21, 2026 (87 days from now).
Spring
Temperatures range from -3 to 14°C. Rainfall is heavy, totalling around 467mm across the season with a monthly average of 156mm. Winds are generally light, averaging 5km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 9 to 21°C. Rainfall is heavy, totalling around 545mm across the season with a monthly average of 182mm. Winds are generally light, averaging 5km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from -3 to 16°C. Rainfall is heavy, totalling around 414mm across the season with a monthly average of 138mm. Expect around 97cm of snow accumulation during this period. Winds are generally light, averaging 5km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -8 to 3°C. Rainfall is heavy, totalling around 450mm across the season with a monthly average of 150mm. Expect around 319cm of snow accumulation during this period. Winds are generally light, averaging 5km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.
Monthly Climate Data
The table below shows monthly climate averages for Zweisimmen based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
