Beach
Plage du Métro
Tarnos, France · sea 22.1 °C at its warmest, in August

Sea temperature month by month
12.6Jan
12Feb
12.4Mar
13.6Apr
15.9May
18.9Jun
21.2Jul
22.1Aug
20.7Sep
18.3Oct
15.7Nov
13.7Dec
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020.
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 du Métro?
The sea off Plage du Métro averages 22.1 °C at its warmest, in August, and 12 °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 du Métro?
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 du Métro?
Plage du Métro is on the coast of Tarnos, France, at 43.5598, -1.5002. The map on this site flies straight to it.