The highest day temperature in April 2025 was 76°F. The lowest night temperature was 24°F. The average values for day and night temperatures during April were 60.5°F и 39.0°F respectivly.

The average sea surface temperature in April 2025 for Winterthur was 52.6°F. The maximum and minimum values were 46.6°F and 56.8°F respectively.

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

Precipitation total in April for Winterthur is 2.2 in. It makes april one of the least rainy months of the year.

The average wind speed in April is 5.1 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 Winterthur in April is 7.4 hours.