Beach
Prainha
Caniçal, Portugal · sea 23.6 °C at its warmest, in September

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 16 km offshore, at the nearest open water cell of a 0.25° grid.
About
A Prainha é uma praia de areia vulcânica situada na freguesia do Caniçal, na ilha da Madeira, em Portugal.
Questions
How warm is the sea at Prainha?
The sea off Prainha averages 23.6 °C at its warmest, in September, and 17.8 °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 Prainha?
The sea reaches 20 °C or more from June to November. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Prainha?
Prainha is on the coast of Caniçal, Portugal, at 32.7425, -16.7156. The map on this site flies straight to it.