Beach
Lucía Beach
Yabucoa, United States · sea 29.1 °C at its warmest, in September

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 19 km offshore, at the nearest open water cell of a 0.25° grid.
About
Playa Lucia is a beach in the municipality of Yabucoa on the southeastern coast of Puerto Rico.
Questions
How warm is the sea at Lucía Beach?
The sea off Lucía Beach averages 29.1 °C at its warmest, in September, and 26.4 °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 Lucía Beach?
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 Lucía Beach?
Lucía Beach is on the coast of Yabucoa, United States, at 18.0400, -65.8300. The map on this site flies straight to it.