Beach
Mentone Beach
Victoria, Australia · sea 20.6 °C at its warmest, in February

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
Mentone Beach is a beach located in Mentone, on Port Phillip Bay, Victoria, Australia, 21 kilometres south from the Melbourne City Centre.
Questions
How warm is the sea at Mentone Beach?
The sea off Mentone Beach averages 20.6 °C at its warmest, in February, and 11.1 °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 Mentone Beach?
The sea reaches 20 °C or more from January to February. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Mentone Beach?
Mentone Beach is on the coast of Victoria, Australia, at -37.9895, 145.0599. The map on this site flies straight to it.