Climate Overview
The climate in St. Moritz is cold. The average annual temperature is 1°C and approximately 1446mm of precipitation falls per year. St. Moritz receives a notable amount of rainfall throughout the year, including during its driest month. St. Moritz 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 -14°C. St. Moritz experiences heavy snowfall, typically from January through December.
Temperature
Temperatures in St. Moritz vary considerably across the year, with a 30°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 16°C with a mean of 11°C. The coldest month is January, when overnight lows fall to -14°C and the daily average is -10°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.
Precipitation
St. Moritz is a fairly wet location, receiving approximately 1446mm of precipitation annually, which averages out to around 121mm per month. The wettest month is June, averaging 171mm of rainfall. August and May also tend to see above-average precipitation. The driest month is February, with just 69mm. That's 103mm less than June, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. St. Moritz receives heavy snowfall, accumulating around 502cm annually from January through December. The snowiest month is November, with approximately 73cm. Winter travel should account for significant snow cover.
Wind
St. Moritz is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is June, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
88 days until Summer
It is currently spring in St. Moritz, which began on March 20, 2026. St. Moritz 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 16°C, while the coldest stretch bottoms out in January near -14°C. Summer is next, beginning on June 21, 2026 — 88 days from now.
Spring
Temperatures range from -9 to 7°C. Rainfall is heavy, totalling around 345mm across the season with a monthly average of 115mm. Winds are generally light, averaging 9km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 5 to 16°C. Rainfall is heavy, totalling around 494mm across the season with a monthly average of 165mm. Winds are generally light, averaging 9km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from -8 to 11°C. Rainfall is heavy, totalling around 378mm across the season with a monthly average of 126mm. Expect around 138cm of snow accumulation during this period. Winds are generally light, averaging 8km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -14 to -3°C. Precipitation is moderate at around 229mm for the season, averaging 76mm per month. Expect around 167cm of snow accumulation during this period. Winds are generally light, averaging 9km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.
Monthly Climate Data
The table below shows monthly climate averages for St. Moritz 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.
