World Resorts Switzerland St Gallen Weather

St Gallen sea water temperature

Current sea water temperature:
+43.2°F
Minimum sea water temperature in January: 46.6°F
Maximum sea water temperature in January: 32.0°F
Average sea water temperature in January: 41.8°F

Sea water temperature for the last 10 days:

January 6 43.2°F January 1 45.0°F
January 5 43.3°F December 31 44.6°F
January 4 43.9°F December 30 43.9°F
January 3 44.6°F December 29 43.9°F
January 2 44.6°F December 28 43.9°F

When is the warmest sea in St Gallen?

Based on the data about daily sea water temperature for the last three years the warmest sea in St Gallen was noticed in August, July and September.

Monthly Sea Temperatures in St Gallen, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 71.8°F. The highest and lowest sea temperatures during the month were 74.8°F and 67.8°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 72.9°F. The highest and lowest sea temperatures during the month were 76.3°F and 70.9°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 66.8°F. The highest and lowest sea temperatures during the month were 70.5°F and 63.3°F.

Best time for vacation in St Gallen

Sunniest months:
August 16 days
October 15 days
September 14 days
Warmest months:
August 73.2 °F
July 72.9 °F
June 70.7 °F
Warmest sea temp:
August 69.7 °F
July 69.0 °F
September 65.0 °F
Coldest months:
January 37.4 °F
December 39.9 °F
February 40.9 °F
Rainiest months:
July 10 days
May 9 days
June 9 days
Windiest months:
January 5.0 mph
February 4.8 mph
March 4.8 mph

St Gallen on a weather map

St Gallen
+12°F
N 4 mph
Feels like: +7°F
Precip.: 0%
Places in Switzerland:
Name
°F
+18°F
+10°F
+10°F
-4°F
+14°F
0°F
+18°F
+19°F
+19°F
+18°F
+14°F
+10°F
+12°F
-6°F
+14°F
24 Hours Forecast
St Gallen
Local time: 07:53
January 07, wednesday
0900
12°F
N
4 mph
1200
23°F
NE
0 mph
1500
25°F
W
1 mph
1800
16°F
N
4 mph
2100
19°F
N
4 mph
January 08, thursday
0000
23°F
NE
7 mph
0300
23°F
NE
7 mph
0600
21°F
N
6 mph
Units of measurement: °C / °F