Beach
Praia do Ervino
São Francisco do Sul, Brazil · sea 26.7 °C at its warmest, in February

Sea temperature month by month
26.5Jan
26.7Feb
26.1Mar
24.7Apr
22.3May
20.2Jun
18.6Jul
18.4Aug
19.5Sep
21Oct
23Nov
25Dec
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020.
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 Praia do Ervino?
The sea off Praia do Ervino averages 26.7 °C at its warmest, in February, and 18.4 °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 do Ervino?
The sea reaches 20 °C or more from October to June. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Praia do Ervino?
Praia do Ervino is on the coast of São Francisco do Sul, Brazil, at -26.3995, -48.5890. The map on this site flies straight to it.