Average Weather during September in St. Moritz (Grisons), Switzerland

The average minimum temperature (usually the minimum temperature is noted during the night) in St. Moritz in September is 0.0°C (32°F). The amount of rain/snow in September is normal with an average of 83mm (3.3in). The average maximum daytime temperature lies around 15.0°C (59°F). Bring a thick blanket because during the night it can cool down to temperatures below freezing. The sun will occasionally show itself with 166 hours of sunshine during the whole month.


So what to wear in September? Visitors traveling to St. Moritz should plan on bringing a totally waterproof rain jacket since it will often be raining. You can also expect some days or nights with snow. So bring gloves or mittens and wear a warm hat.

No idea where to travel to this year? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go with our weather planner.

For other monthly average weather and what to do in September look at the numbers below.

Monthly Averages

Show in Fahrenheit

Min Temperature 0 °C
Max Temperature 15 °C
Precipitation 83mm
Sunshine Hours 166

Where to stay in St. Moritz

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in .

Swimming
5/10
Cycling
6/10
Walking
6/10
Camping
4/10
Outdoor sports
9/10

More Climate Information For St. Moritz

Weather and Climate offers all the information you need to know about the climate in St. Moritz.

We collected past weather data from many thousand weather stations around the world. So find on this website the historical weather averages in other cities in Switzerland and climate and forecast data for all other countries in the world.