28.08
fri
fri
Day
70°F
E 14 mph
Precip.
19%
19%
Night
57°F
SE 6 mph
Precip.
66%
66%
29.08
sat
sat
Day
63°F
S 4 mph
Precip.
15%
15%
Night
68°F
NE 3 mph
Precip.
6%
6%
30.08
sun
sun
Day
63°F
S 4 mph
Precip.
4%
4%
Night
70°F
N 7 mph
Precip.
22%
22%
31.08
mon
mon
Day
64°F
SE 4 mph
Precip.
14%
14%
Night
66°F
N 1 mph
Precip.
8%
8%
01.09
tue
tue
Day
63°F
S 3 mph
Precip.
4%
4%
Night
57°F
N 6 mph
Precip.
62%
62%
02.09
wed
wed
Day
61°F
E 5 mph
Precip.
14%
14%
Night
64°F
N 5 mph
Precip.
11%
11%
03.09
thu
thu
Day
63°F
E 7 mph
Precip.
11%
11%
Night
63°F
NE 9 mph
Precip.
32%
32%
sea water
temperature
temperature
| St Gallen |
monthly
weather
weather
| St Gallen |
current
weather
weather
| St Gallen |
14 days
forecast
forecast
| St Gallen |
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 75.8°F. The highest and lowest sea temperatures during the month were 77.5°F and 72.7°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.
Air temperature in St Gallen, °F
Precipitation total in St Gallen, in.
* Charts above show average data for the last 3 years.
Best time for vacation in St Gallen
St Gallen on a weather map
Places in Switzerland:
Name
°F
24 Hours Forecast
St Gallen
Local time: 11:56
August 28, friday
1200
70°F
E
14 mph
14 mph
1500
66°F
E
10 mph
10 mph
1800
63°F
NE
8 mph
8 mph
2100
61°F
E
6 mph
6 mph
August 29, saturday
0000
57°F
SE
6 mph
6 mph
0300
54°F
NW
2 mph
2 mph
0600
64°F
N
6 mph
6 mph
0900
57°F
NE
2 mph
2 mph
