Beach
Ninety Mile Beach
Victoria, Australia · sea 19.1 °C at its warmest, in February

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 18 km offshore, at the nearest open water cell of a 0.25° grid.
About
The Ninety Mile Beach is a sandy stretch of beach on the south-eastern coastline of the East Gippsland region of Victoria in Australia.
Questions
How warm is the sea at Ninety Mile Beach?
The sea off Ninety Mile Beach averages 19.1 °C at its warmest, in February, and 12.4 °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 Ninety Mile 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 Ninety Mile Beach?
Ninety Mile Beach is on the coast of Victoria, Australia, at -38.2167, 147.3833. The map on this site flies straight to it.