The highest day temperature in April 2026 was 65°F. The lowest night temperature was 17°F. The average values for day and night temperatures during April were 55.3°F и 40.1°F respectivly.

The average sea surface temperature in April 2026 for St Gallen was 51.2°F. The maximum and minimum values were 43.2°F and 56.0°F respectively.

Most of the days in April are sunny but you can also expect cloudy and gloomy days.

Precipitation total in April for St Gallen is 2.8 in. It makes april one of the least rainy months of the year.

The average wind speed in April is 4.6 mph. This value is relatively stable throughout the year.

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 April is 7.8 hours.