Beach
Playa de Mataleñas
Spain · sea 21.5 °C at its warmest, in August

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 17 km offshore, at the nearest open water cell of a 0.25° grid.
About
La playa de Mataleñas está ubicada en Cueto, en el municipio de Santander, comunidad autónoma de Cantabria, España.
Questions
How warm is the sea at Playa de Mataleñas?
The sea off Playa de Mataleñas averages 21.5 °C at its warmest, in August, and 12.6 °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 Playa de Mataleñas?
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 Playa de Mataleñas?
Playa de Mataleñas is on the coast of Spain, at 43.4858, -3.7881. The map on this site flies straight to it.