Beach
Mavra Volia
Chios Municipality, Greece · sea 23.4 °C at its warmest, in August

Sea temperature month by month
16.4Jan
15.9Feb
15.8Mar
16.5Apr
18.6May
21.6Jun
22.8Jul
23.4Aug
22.8Sep
21.1Oct
18.9Nov
17.4Dec
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020.
About
beach in Greece
Wikipedia has no article about this beach yet. It is on the atlas from its Wikidata record and its photograph.
Questions
How warm is the sea at Mavra Volia?
The sea off Mavra Volia averages 23.4 °C at its warmest, in August, and 15.8 °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 Mavra Volia?
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 Mavra Volia?
Mavra Volia is on the coast of Chios Municipality, Greece, at 38.1847, 26.0290. The map on this site flies straight to it.