Measurements:
°C
°F
St Moritz
18°F
S 5 mph
Feels like: 10°F
Precip: 100%
World Resorts Switzerland St Moritz Weather September Weather in St Moritz

St Moritz Weather: September

Average Day Temperature: 52.3°F
Average Night Temperature: 31.9°F
Number of Sunny Days: 9 days
Sunshine Hours: 11.7 - 13.3 hours
Number of Rainy Days: 6 days
Precipitation Totals: 4.1 in

Air Temperature in September, °F

Select Year: 2025 2024 2023

The highest day temperature in September 2025 was 72°F. The lowest night temperature was 19°F. The average values for day and night temperatures during September were 52.5°F и 34.1°F respectivly.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during September. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in September, in

Precipitation total in September for St Moritz is 4.1 in.

Wind Speed in September, mph

The average wind speed in September is 5.2 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for St Moritz in September is 6.3 hours.

Best Time to Visit St Moritz
The most sunny months:
December 10 days
October 9 days
August 9 days
The most warm months:
August 61.0 °F
July 60.8 °F
June 56.9 °F
The most cold months:
January 19.0 °F
December 20.8 °F
February 23.3 °F
The most rainy months:
July 13 days
June 12 days
August 11 days
The most windy months:
January 6 mph
February 6 mph
December 6 mph

St Moritz on the Weather Map

Switzerland Resorts:
NAME
Basle +38
Berne +34
Geneva +36
Gstaad +30
Lake Geneva +38
Lausanne +38
Lucerne +28
Lugano +42
Montreux +28
St Gallen +34
Verbier +18
Vevey +28
Winterthur +34
Zermatt +12
Zurich +34
24 Hours Weather Forecast
St Moritz
Local time: 08:52
05 dec, friday
0900 18°F
S
5 mph
1200 22°F
S
6 mph
1500 22°F
S
6 mph
1800 12°F
SW
5 mph
2100 -2°F
NW
3 mph
06 dec, saturday
0000 2°F
N
6 mph
0300 4°F
N
5 mph
0600 6°F
N
4 mph