Beach
Cuchía beach
Miengo, 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 22 km offshore, at the nearest open water cell of a 0.25° grid.
About
La playa de Cuchía o playa de Marzán está situada en la costa central de Cantabria, en la margen derecha de la ría de San Martín de la Arena, junto a su desembocadura.
Questions
How warm is the sea at Cuchía beach?
The sea off Cuchía beach 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 Cuchía beach?
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 Cuchía beach?
Cuchía beach is on the coast of Miengo, Spain, at 43.4359, -4.0307. The map on this site flies straight to it.