Beach
Streets Beach
Australia · sea 26.5 °C at its warmest, in February

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 15 km offshore, at the nearest open water cell of a 0.25° grid.
About
man-made beach in Australia
Wikipedia has no article about this beach yet. It is on the atlas from its Wikidata record and its photograph, and is covered inside the article on South Bank Parklands.
Questions
How warm is the sea at Streets Beach?
The sea off Streets Beach averages 26.5 °C at its warmest, in February, and 19.7 °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 Streets Beach?
The sea reaches 20 °C or more from January, February, March, April, May, June, July, September, October, November and December. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Streets Beach?
Streets Beach is on the coast of Australia, at -27.4786, 153.0235. The map on this site flies straight to it.