Rocky shore & cove
Calanque du Brégançonnet
Hyères, France · sea 23.4 °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
bay of the island Île de Porquerolle in France
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 Calanque du Brégançonnet?
The sea off Calanque du Brégançonnet averages 23.4 °C at its warmest, in August, and 13.1 °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 Calanque du Brégançonnet?
The sea reaches 20 °C or more from June to September. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Calanque du Brégançonnet?
Calanque du Brégançonnet is on the coast of Hyères, France, at 42.9944, 6.1812. The map on this site flies straight to it.