Beach
Barra do Una
São Sebastião, Brazil · sea 27.1 °C at its warmest, in February

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
Barra do Una é uma praia brasileira do litoral norte de São Paulo em São Sebastião. Em 2013, foi considerada pelos leitores do portal iG como a a mais bonita do estado.
Questions
How warm is the sea at Barra do Una?
The sea off Barra do Una averages 27.1 °C at its warmest, in February, and 20.5 °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 Barra do Una?
The sea reaches 20 °C or more from All year. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Barra do Una?
Barra do Una is on the coast of São Sebastião, Brazil, at -23.7620, -45.7675. The map on this site flies straight to it.