Beach
Beach of Santa María del Mar
Castrillón, Spain · sea 20.5 °C at its warmest, in August

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020.
About
La playa de Santa María del Mar se encuentra entre las localidades de El Puerto y Naveces, en el concejo de Castrillón (Asturias, España).
Questions
How warm is the sea at Beach of Santa María del Mar?
The sea off Beach of Santa María del Mar averages 20.5 °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 Beach of Santa María del Mar?
The sea reaches 20 °C or more from August. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Beach of Santa María del Mar?
Beach of Santa María del Mar is on the coast of Castrillón, Spain, at 43.5734, -5.9973. The map on this site flies straight to it.