Beach
Pefkari
Thasos Municipality, Greece · sea 25.7 °C at its warmest, in August

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020.
About
Pefkari (Greek: Πευκάρι) is a village on the island of Thasos, Greece. It is a popular tourist destination. Its name means "little pine tree" in the local dialect.
Questions
How warm is the sea at Pefkari?
The sea off Pefkari averages 25.7 °C at its warmest, in August, and 12.5 °C at its coolest. These are monthly means from NOAA's OISST v2.1 satellite and buoy record for 1991 to 2020, sampled at the beach's own coordinates.
When can you swim at Pefkari?
The sea reaches 20 °C or more from June to October. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Pefkari?
Pefkari is on the coast of Thasos Municipality, Greece, at 40.6178, 24.5978. The map on this site flies straight to it.