Beach
Moondah 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.
About
beach in Victoria, Australia
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 Moondah Beach?
The sea off Moondah 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 Moondah 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 Moondah Beach?
Moondah Beach is on the coast of Victoria, Australia, at -38.1868, 145.0723. The map on this site flies straight to it.