Beach
Spiaggia di Maladroxia
Italy · sea 25.1 °C at its warmest, in August

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 15 km offshore, at the nearest open water cell of a 0.25° grid.
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 Spiaggia di Maladroxia?
The sea off Spiaggia di Maladroxia averages 25.1 °C at its warmest, in August, and 14.1 °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 Spiaggia di Maladroxia?
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 Spiaggia di Maladroxia?
Spiaggia di Maladroxia is on the coast of Italy, at 38.9981, 8.4491. The map on this site flies straight to it.