Beach
Kalotaritissa
Greece · sea 23.6 °C at its warmest, in August

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 14 km offshore, at the nearest open water cell of a 0.25° grid.
About
Kalotaritissa Beach (Greek: Καλοταρίτισσα) is a sandy beach in the Greek island of Amorgos, accessible by car or public transport.
Questions
How warm is the sea at Kalotaritissa?
The sea off Kalotaritissa averages 23.6 °C at its warmest, in August, and 16.2 °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 Kalotaritissa?
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 Kalotaritissa?
Kalotaritissa is on the coast of Greece, at 36.7931, 25.7432. The map on this site flies straight to it.