Beach
Cheviot Beach
Portsea, Australia · sea 19.3 °C at its warmest, in February

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020.
About
Cheviot Beach is a beach near Point Nepean in Victoria, Australia. It was named after the SS Cheviot, which broke up and sank nearby with the loss of 35 lives on 20 October 1887.
Questions
How warm is the sea at Cheviot Beach?
The sea off Cheviot Beach averages 19.3 °C at its warmest, in February, and 12.6 °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 Cheviot Beach?
The sea here never averages 20 °C in any month, so swimming means cold water all year. Some people do it anyway.
Where is Cheviot Beach?
Cheviot Beach is on the coast of Portsea, Australia, at -38.3117, 144.6640. The map on this site flies straight to it.