Beach
Secret Beach
Mirissa, Sri Lanka · sea 29.5 °C at its warmest, in April

Sea temperature month by month
27.7Jan
28.1Feb
28.9Mar
29.5Apr
28.8May
28.1Jun
27.5Jul
27.6Aug
27.8Sep
28.1Oct
28.5Nov
28.1Dec
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020.
About
beach in Mirissa, Sri Lanka
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 Secret Beach?
The sea off Secret Beach averages 29.5 °C at its warmest, in April, and 27.5 °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 Secret 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 Secret Beach?
Secret Beach is on the coast of Mirissa, Sri Lanka, at 5.9435, 80.4502. The map on this site flies straight to it.