Measurements:
°C
°F
St Gallen
34°F
SE 8 mph
Feels like: 26°F
Precip: 100%
World Resorts Switzerland St Gallen Weather

St Gallen Sea Water Temperature

Current Sea Water Temperature:
+45.4°F
Maximum Sea Water Temperature in March: 47.2°F
Minimum Sea Water Temperature in March: 30.0°F
Average water temperature in March: 41.1°F

Sea Water Temperature for the Last 10 Days:

March 26 45.4°F March 21 43.8°F
March 25 44.8°F March 20 43.8°F
March 24 44.8°F March 19 45.0°F
March 23 44.6°F March 18 44.4°F
March 22 43.2°F March 17 42.0°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 +42
Berne +36
Geneva +40
Gstaad +24
Lake Geneva +40
Lausanne +38
Lucerne +36
Lugano +48
Montreux +26
St Gallen +34
St Moritz +14
Verbier +20
Vevey +26
Winterthur +40
Zurich +40
24 Hours Weather Forecast
St Gallen
Local time: 14:58
26 mar, thursday
1500 34°F
SE
8 mph
1800 30°F
SE
8 mph
2100 28°F
NE
2 mph
27 mar, friday
0000 24°F
E
2 mph
0300 24°F
S
3 mph
0600 22°F
S
2 mph
0900 28°F
SW
6 mph
1200 32°F
SW
8 mph