Measurements:
°C
°F
CURRENT WEATHER
22:20
St Gallen
62°F
E 19 mph
Feels like: 62°F
Precip: 88%
World Resorts Switzerland St Gallen Weather

7 Day Weather Forecast

09.08
tue
DAY
72°F
S 1 mph
precip
5%
NIGHT
74°F
N 6 mph
precip
11%
09.09
wed
DAY
52°F
S 6 mph
precip
76%
NIGHT
50°F
NW 2 mph
precip
35%
09.10
thu
DAY
50°F
S 2 mph
precip
28%
NIGHT
56°F
E 4 mph
precip
14%
09.11
fri
DAY
54°F
SW 2 mph
precip
27%
NIGHT
64°F
N 1 mph
precip
10%
09.12
sat
DAY
52°F
S 3 mph
precip
19%
NIGHT
64°F
N 4 mph
precip
5%
09.13
sun
DAY
60°F
SE 3 mph
precip
5%
NIGHT
60°F
E 5 mph
precip
28%
09.14
mon
DAY
58°F
SW 2 mph
precip
13%
NIGHT
66°F
N 2 mph
precip
10%

St Gallen Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for St Gallen was 19.3°F. The maximum and minimum values were 17.4°F and 21.4°F respectively.

St Gallen on the Weather Map

Best Time to Visit St Gallen
The most sunny months:
August 15 days
October 15 days
September 14 days
The most warm months:
August 75.8 °F
July 75.5 °F
June 73.1 °F
Warmest sea temperature:
August 72.3 °F
July 71.5 °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
more details