Beach
Petani Beach
Greece · sea 25.9 °C at its warmest, in August

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 13 km offshore, at the nearest open water cell of a 0.25° grid.
About
Petani Beach (also spelled Petanoi) is situated in the North West of the Paliki, in Kefalonia, Greece. The nearest large town is Lixouri.
Questions
How warm is the sea at Petani Beach?
The sea off Petani Beach averages 25.9 °C at its warmest, in August, and 15.2 °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 Petani Beach?
The sea reaches 20 °C or more from June to November. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Petani Beach?
Petani Beach is on the coast of Greece, at 38.2607, 20.3762. The map on this site flies straight to it.