Beach
Plage de Bonnegrâce
Six-Fours-les-Plages, France · sea 23.3 °C at its warmest, in August

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020.
About
beach in Six-Fours-les-Plages
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 Plage de Bonnegrâce?
The sea off Plage de Bonnegrâce averages 23.3 °C at its warmest, in August, and 13.2 °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 Plage de Bonnegrâce?
The sea reaches 20 °C or more from July to September. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Plage de Bonnegrâce?
Plage de Bonnegrâce is on the coast of Six-Fours-les-Plages, France, at 43.1111, 5.8116. The map on this site flies straight to it.