18.12
thu
thu
Day
48°F
NW 2 mph
Precip.
0%
0%
Night
39°F
N 6 mph
Precip.
0%
0%
19.12
fri
fri
Day
45°F
E 2 mph
Precip.
0%
0%
Night
39°F
N 3 mph
Precip.
0%
0%
20.12
sat
sat
Day
45°F
S 1 mph
Precip.
0%
0%
Night
36°F
NW 2 mph
Precip.
0%
0%
21.12
sun
sun
Day
43°F
SW 1 mph
Precip.
0%
0%
Night
37°F
NE 2 mph
Precip.
0%
0%
22.12
mon
mon
Day
43°F
W 2 mph
Precip.
0%
0%
Night
37°F
NE 3 mph
Precip.
0%
0%
23.12
tue
tue
Day
43°F
E 2 mph
Precip.
0%
0%
Night
41°F
N 1 mph
Precip.
100%
100%
24.12
wed
wed
Day
41°F
W 3 mph
Precip.
0%
0%
Night
34°F
NW 2 mph
Precip.
0%
0%
25.12
thu
thu
Day
39°F
E 1 mph
Precip.
0%
0%
Night
34°F
W 1 mph
Precip.
0%
0%
26.12
fri
fri
Day
37°F
NE 2 mph
Precip.
0%
0%
Night
36°F
SW 2 mph
Precip.
0%
0%
27.12
sat
sat
Day
37°F
S 2 mph
Precip.
0%
0%
Night
37°F
W 2 mph
Precip.
0%
0%
28.12
sun
sun
Day
39°F
S 2 mph
Precip.
0%
0%
Night
37°F
S 1 mph
Precip.
0%
0%
29.12
mon
mon
Day
39°F
S 3 mph
Precip.
80%
80%
Night
37°F
S 4 mph
Precip.
71%
71%
30.12
tue
tue
Day
37°F
SW 8 mph
Precip.
84%
84%
Night
30°F
SW 7 mph
Precip.
0%
0%
31.12
wed
wed
Day
32°F
SW 7 mph
Precip.
0%
0%
Night
25°F
E 2 mph
Precip.
0%
0%
sea water
temperature
temperature
| St Gallen |
monthly
weather
weather
| St Gallen |
current
weather
weather
| St Gallen |
7 days
forecast
forecast
| St Gallen |
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 46.1°F. The highest and lowest sea temperatures during the month were 48.0°F and 44.6°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 43.3°F. The highest and lowest sea temperatures during the month were 46.6°F and 42.1°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: 10:30
December 18, thursday
1200
48°F
NW
2 mph
2 mph
1500
48°F
NW
1 mph
1 mph
1800
41°F
NE
3 mph
3 mph
2100
41°F
N
6 mph
6 mph
December 19, friday
0000
39°F
N
6 mph
6 mph
0300
37°F
NE
5 mph
5 mph
0600
37°F
N
4 mph
4 mph
0900
37°F
N
3 mph
3 mph
