Beach
Praia da Ursa
Colares, Portugal · sea 18.7 °C at its warmest, in August

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 15 km offshore, at the nearest open water cell of a 0.25° grid.
About
A Praia da Ursa é uma praia que se localiza perto do Cabo da Roca no concelho de Sintra, Portugal. Dada a proximidade ao cabo, é a praia mais ocidental da Europa.
Questions
How warm is the sea at Praia da Ursa?
The sea off Praia da Ursa averages 18.7 °C at its warmest, in August, and 14.4 °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 Praia da Ursa?
The sea here never averages 20 °C in any month, so swimming means cold water all year. Some people do it anyway.
Where is Praia da Ursa?
Praia da Ursa is on the coast of Colares, Portugal, at 38.7901, -9.4924. The map on this site flies straight to it.