World Resorts Switzerland St Gallen Weather

St Gallen Sea Temperature in September

Average sea water temperature in September:
+65.0°F
Minimum sea water temperature in September: 73.9°F
Maximum sea water temperature in September: 32.0°F

Daily 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.

Monthly sea water temperature in St Gallen, °F

Which Switzerland resorts have warmest sea in September?

Place name September 2025 September 2024
Montreux 68.5°F 68.9°F
Gstaad 68.5°F 68.9°F
Verbier 68.5°F 68.9°F
Vevey 68.4°F 68.9°F
Lausanne 68.1°F 68.7°F
Lake Geneva 68.0°F 68.4°F
Zurich 67.6°F 68.7°F
Winterthur 67.6°F 68.7°F
Geneva 66.9°F 67.2°F
St Gallen 66.8°F 67.8°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 39.8 °F
February 40.9 °F
Rainiest months:
July 10 days
May 9 days
June 9 days
Windiest months:
January 5.0 mph
December 4.8 mph
February 4.8 mph

St Gallen on a weather map

Current weather
07:30
St Gallen
+28°F
S 2 mph
Feels like: +28°F
Precip.: 0%
Places in Switzerland:
Name
°F
Basle
+30°F
Berne
+27°F
Vevey
+28°F
Verbier
+18°F
Winterthur
+28°F
Gstaad
+19°F
Geneva
+32°F
Lake Geneva
+32°F
Interlaken
+23°F
Lausanne
+32°F
Lugano
+32°F
Lucerne
+28°F
Montreux
+28°F
St Gallen
+28°F
Zurich
+28°F
all places
24 Hours Forecast
St Gallen
Local time: 07:30
December 25, thursday
0900
28°F
S
2 mph
1200
34°F
S
2 mph
1500
36°F
S
3 mph
1800
30°F
SW
1 mph
2100
30°F
SW
1 mph
December 26, friday
0000
30°F
N
0 mph
0300
28°F
W
2 mph
0600
30°F
SW
2 mph
Units of measurement: °C / °F