World Resorts Switzerland St Moritz Weather

St Moritz weather in August

Weather in St Moritz: August

Average day temperature: 59.9°F
Average night temperature: 40.0°F
Number of sunny days: 9 days
Day length: 13.4 - 14.8 hours
Number of rainy days: 11 days
Precipitation totals: 6.9 in.

Air temperature in August, °F

Show year:
2025
2024
2023

The highest day temperature during August of 2025 was 72°F. At the same time the lowest night temperature was 29°F. Daily and nightly averages during August were 60.0°F and 39.0°F.

Sunny, partly cloudy and cloudy days

Mostly all days in August are partly cloudy but sunny or cloudy days are also possible.

Precipitation total in August, in.

Precipitation total value in St Moritz in August is 7.7 in. Other months of the year show relatively similar values.

Wind speed in August, mph

The average wind speed value in August is 5.1 mph The wind's strength is relatively same during the whole year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in August is: 7.3.

Best time for vacation in St Moritz

Sunniest months:
December 10 days
October 9 days
August 9 days
Warmest months:
August 59.9 °F
July 59.7 °F
June 56.2 °F
Coldest months:
January 22.1 °F
December 23.7 °F
February 26.0 °F
Rainiest months:
July 13 days
June 12 days
August 11 days
Windiest months:
January 6.1 mph
February 5.9 mph
December 5.9 mph

St Moritz on a weather map

St Moritz
+21°F
S 5 mph
Feels like: +14°F
Precip.: 100%
Places in Switzerland:
Name
°F
+39°F
+36°F
+30°F
+21°F
+36°F
+32°F
+37°F
+39°F
+39°F
+43°F
+30°F
+30°F
+36°F
+16°F
+36°F
24 Hours Forecast
St Moritz
Local time: 09:20
December 05, friday
1200
25°F
S
6 mph
1500
25°F
S
6 mph
1800
16°F
SW
5 mph
2100
3°F
NW
3 mph
December 06, saturday
0000
7°F
N
6 mph
0300
9°F
N
5 mph
0600
10°F
N
4 mph
0900
12°F
N
3 mph
Units of measurement: °C / °F