The highest day temperature in April 2025 was 70°F. The lowest night temperature was 24°F. The average values for day and night temperatures during April were 56.2°F и 37.3°F respectivly.

The average sea surface temperature in April 2025 for St Gallen was 50.8°F. The maximum and minimum values were 44.2°F and 57.0°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 2.9 in. It makes april one of the least rainy months of the year.

The average wind speed in April is 4.7 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.