The highest day temperature in May 2025 was 78°F. The lowest night temperature was 34°F. The average values for day and night temperatures during May were 57.5°F и 45.2°F respectivly.

The average sea surface temperature in May 2025 for Wisla was 30.0°F. The maximum and minimum values were 30.0°F and 30.0°F respectively.

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

Precipitation total in May for Wisla is 3.1 in. It makes may one of the most rainy months of the year.

The average wind speed in May is 6.1 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 Wisla in May is 8.3 hours.