Beach
Cabo Pulmo Beach
Cabo Pulmo National Park, Mexico · sea 29.5 °C at its warmest, in August

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020.
About
beach in Mexico
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 Cabo Pulmo Beach?
The sea off Cabo Pulmo Beach averages 29.5 °C at its warmest, in August, and 21.7 °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 Cabo Pulmo 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 Cabo Pulmo Beach?
Cabo Pulmo Beach is on the coast of Cabo Pulmo National Park, Mexico, at 23.4348, -109.4265. The map on this site flies straight to it.