Golden sand
Aritzatxu
Bermeo, Spain · sea 21.9 °C at its warmest, in August

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 24 km offshore, at the nearest open water cell of a 0.25° grid.
About
La playa Aritzatxu es una playa con arena, rocas y vegetación situada en el municipio vizcaíno de Bermeo, en el País Vasco (España).
Questions
How warm is the sea at Aritzatxu?
The sea off Aritzatxu averages 21.9 °C at its warmest, in August, and 12.5 °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 Aritzatxu?
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 Aritzatxu?
Aritzatxu is on the coast of Bermeo, Spain, at 43.4258, -2.7303. The map on this site flies straight to it.