Weather in June
Sea temperature
In Naantali, Finland, the average seawater temperature in June is 8.9°C (48°F).Note: Swimming in 8.9°C (48°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.
Daylight
The month with the longest days in Naantali is June, with an average of 18h and 53min of daylight.On the first day of June in Naantali, sunrise is at 04:16 and sunset at 22:43. On the last day of the month, sunrise is at 04:07 and sunset at 23:03 EEST.
FAQ
How cold is the water in June in Naantali?
In Naantali, the average seawater temperature in June is 8.9°C (48°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.
When are the longest days in Naantali?
June has the longest days of the year in Naantali, with an average of 18h and 53min of daylight.
How many hours of daylight does Naantali have in June?
In Naantali, the average day length in June is 18h and 53min.
When are sunrise and sunset in June in Naantali?
On the first day of June, sunrise is at 04:16 and sunset at 22:43. On the last day of the month, sunrise is at 04:07 and sunset at 23:03 EEST.
Average sea temperature in June
Naantali, Finland
- Average sea temperature in June: 8.9°C
The best month for swimming (with the highest average sea temperature) is August (12.8°C).
The coldest month (with the lowest average sea temperature) is February (-0.4°C).
Average daylight in June
Naantali, Finland
- Average daylight in June: 18h and 53min
The month with the longest days is June (Average daylight: 18h and 53min).
The month with the shortest days is December (Average daylight: 5h and 53min).
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