Measurements:
°C
°F
St Gallen
34°F
E 2 mph
Feels like: 32°F
Precip: 100%
World Resorts Switzerland St Gallen Weather May Weather in St Gallen

St Gallen Weather: May

Average Day Temperature: 63.1°F
Average Night Temperature: 46.1°F
Sea Water Temperature: 56.5°F
Number of Sunny Days: 11 days
Sunshine Hours: 14.5 - 15.7 hours
Number of Rainy Days: 9 days
Precipitation Totals: 5.2 in

Air Temperature in May, °F

Select Year: 2025 2024 2023

The highest day temperature in May 2025 was 82°F. The lowest night temperature was 31°F. The average values for day and night temperatures during May were 59.7°F и 42.9°F respectivly.

St Gallen Water Sea Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for St Gallen was 60.4°F. The maximum and minimum values were 58.6°F and 63.2°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during May. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in May, in

Precipitation total in May for St Gallen is 5.2 in. It makes may one of the most rainy months of the year.

Wind Speed in May, mph

The average wind speed in May is 4.7 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for St Gallen in May is 8.0 hours.

Best Time to Visit St Gallen
The most sunny months:
August 16 days
October 15 days
September 14 days
The most warm months:
August 75.8 °F
July 75.4 °F
June 73.0 °F
Warmest sea temperature:
August 71.9 °F
July 71.1 °F
September 66.7 °F
The most cold months:
January 36.0 °F
December 38.7 °F
February 39.9 °F
The most rainy months:
July 10 days
May 9 days
June 9 days
The most windy months:
January 5 mph
December 4 mph
February 4 mph

St Gallen on the Weather Map

Switzerland Resorts:
NAME
Basle +38
Berne +34
Geneva +36
Gstaad +30
Lake Geneva +38
Lausanne +38
Lucerne +28
Lugano +42
Montreux +28
St Gallen +34
Verbier +18
Vevey +28
Winterthur +34
Zermatt +12
Zurich +34
24 Hours Weather Forecast
St Gallen
Local time: 08:54
05 dec, friday
0900 34°F
E
2 mph
1200 34°F
E
1 mph
1500 34°F
SE
2 mph
1800 34°F
NE
1 mph
2100 34°F
NW
2 mph
06 dec, saturday
0000 28°F
N
4 mph
0300 28°F
N
4 mph
0600 30°F
N
4 mph