St. Moritz weather in September (Grisons, Switzerland)
Curious about the September weather in St. Moritz? This guide provides all the details you need.
In September, St. Moritz generally has low temperatures and high rainfall. Throughout the daytime, temperatures often hover around 11°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 2°C.
St. Moritz in September usually receives high rainfall, averaging around 118 mm for the month. Based on our climate data of the past 30 years, about 15 days of rain are anticipated.
The area enjoys a balanced 156 hours of sunlight. Ensuring it's neither too overcast nor too sunny.
If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit St. Moritz. July and August typically offer the best circumstances. While January, February, March, April, May, June, September, October, November and December tend to showcase less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized St. Moritz climate page with graphs.
St. Moritz, monthly averages in September
Min Temperature
2°C
Max Temperature
11°C
Chance of Rain
51%
Precipitation
118 mm
Rainy days
15 days
Humidity
76% *
Sunshine
156 hours *
Percentage Sunshine
58% *
Where to go in Switzerland in September
Find out more about the weather in Switzerland in September and which places have the best weather conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in St. Moritz in September?
Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly. Bring a rain jacket in case it rains during your stay.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do in September.
Interested in more climate information?
Weather and Climate provides you with all the information you need about the climate in St. Moritz.
Our site offers climate and forecast data for every country in the world. Are you going to Switzerland? On this website you can find historical weather averages for many cities in Switzerland. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.
