St. Moritz Weather & Climate: Best Time to Visit

Monthly Temperature in St. Moritz

The climate in St. Moritz is known for significant temperature differences throughout the year, making the weather dynamic. Average daytime temperatures reach a moderate 16°C (61°F) in July. In January, the coolest month of the year, temperatures drop to a very cold -6°C (21°F).

At night, temperatures range from around 5°C (41°F) in July to -15°C (5°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in St. Moritz

St. Moritz has a notably wet climate with abundant precipitation, recording 1397 mm (55 in) of rain/snowfall per year. St. Moritz can be quite wet during June, receiving approximately 160 mm (6.3 in) of precipitation over 20 rainy days.

In contrast, during the driest month (February), you will experience much drier conditions, with 70 mm (2.8 in) of precipitation spread across 16 snowy days days. For more details, please visit our St. Moritz Precipitation page.

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

The average number of days each month with precipitation

Sunshine Hours in St. Moritz

St. Moritz can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 6.7 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 3.4 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

Humidity in St. Moritz by Month

The relative humidity is high throughout the year in St. Moritz.

The city experiences its highest humidity in December, reaching 80%. In April, the humidity drops to its lowest level at 68%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year