Measurements:
°C
°F
St Gallen
42°F
E 2 mph
Feels like: 40°F
Precip: 100%
World Resorts Switzerland St Gallen Weather

St Gallen Sea Water Temperature

Current Sea Water Temperature:
+43.6°F
Maximum Sea Water Temperature in March: 47.2°F
Minimum Sea Water Temperature in March: 30.0°F
Average water temperature in March: 41.0°F

Sea Water Temperature for the Last 10 Days:

February 28 43.6°F February 23 41.0°F
February 27 43.2°F February 22 41.2°F
February 26 42.6°F February 21 41.0°F
February 25 42.8°F February 20 41.2°F
February 24 40.8°F February 19 41.4°F

When is the Warmest Sea for St Gallen?

According to our data for the last three years for St Gallen the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for St Gallen was 74.2°F. The maximum and minimum values were 69.8°F and 77.6°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for St Gallen was 75.4°F. The maximum and minimum values were 73.2°F and 79.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for St Gallen was 68.6°F. The maximum and minimum values were 64.8°F and 72.8°F respectively.

Best Time to Visit St Gallen
The most sunny months:
August 16 days
October 15 days
September 14 days
The most warm months:
August 75.8 °F
July 75.4 °F
June 73.0 °F
Warmest sea temperature:
August 71.9 °F
July 71.1 °F
September 66.7 °F
The most cold months:
January 35.8 °F
December 38.8 °F
February 40.0 °F
The most rainy months:
July 10 days
May 9 days
June 9 days
The most windy months:
January 4 mph
February 4 mph
March 4 mph

St Gallen on the Weather Map

Switzerland Resorts:
NAME
Basle +44
Berne +40
Geneva +42
Gstaad +36
Lake Geneva +42
Lausanne +40
Lucerne +42
Lugano +48
Montreux +34
St Gallen +42
St Moritz +30
Verbier +32
Vevey +34
Winterthur +44
Zurich +42
24 Hours Weather Forecast
St Gallen
Local time: 03:27
01 mar, sunday
0600 40°F
S
2 mph
0900 40°F
SW
4 mph
1200 40°F
SW
4 mph
1500 42°F
SW
2 mph
1800 42°F
S
1 mph
2100 40°F
W
1 mph
02 mar, monday
0000 38°F
NW
3 mph
0300 36°F
NW
2 mph