Weather in June
June marks the arrival of summer in
Kotka, with soaring sea temperatures and extended daylight hours. An average sea temperature of 13.5°C (56.3°F) echoes the warm, pleasant conditions seen during the summer months. Days are fostering outdoor recreational activities, and the city is bathed in sunshine. The long, sunlit hours and comfortable climates make June a favorite month for tourists.
Sea temperature
In June, the average sea temperature is 13.5°C (56.3°F).
Note: Staying in 13.5°C (56.3°F) waters for just a few moments at 13°C (55.4°F) can be harrowing, and below 10°C (50°F) poses breathing and cold shock risks, depending on individual tolerance.
Daylight
With an average of 18h and 54min of daylight, June has the longest days of the year.
On the first day of the month, sunrise is at 03:55 and sunset at 22:24. On the last day of June, sunrise is at 03:48 and sunset at 22:43 EEST.