Beach
Ponta do Madeiro
Tibau do Sul, Brazil · sea 28.7 °C at its warmest, in April

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 28 km offshore, at the nearest open water cell of a 0.25° grid.
About
beach in Tibau do Sul municipality, Rio Grande do Norte, Brazil
Wikipedia has no article about this beach yet. It is on the atlas from its Wikidata record and its photograph.
Questions
How warm is the sea at Ponta do Madeiro?
The sea off Ponta do Madeiro averages 28.7 °C at its warmest, in April, and 26.3 °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 Ponta do Madeiro?
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 Ponta do Madeiro?
Ponta do Madeiro is on the coast of Tibau do Sul, Brazil, at -6.2138, -35.1137. The map on this site flies straight to it.