The highest day temperature in May 2023 was 57°F. The lowest night temperature was 30°F. The average values for day and night temperatures during May were 47.1°F и 42.9°F respectivly.

The average sea surface temperature in May 2023 for Kotka was 43.7°F. The maximum and minimum values were 36.2°F and 53.0°F respectively.

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

Precipitation total in May for Kotka is 1.7 in. It makes may one of the least rainy months of the year.

The average wind speed in May is 10.2 mph. It makes May the most windless month of the year for Kotka.

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 Kotka in May is 10.4 hours.