Beach
Scarborough Beach
Queensland, 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.
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 Scarborough Beach?
The sea off Scarborough Beach averages 26.5 °C at its warmest, in February, and 19.8 °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 Scarborough 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 Scarborough Beach?
Scarborough Beach is on the coast of Queensland, Australia, at -27.1998, 153.1161. The map on this site flies straight to it.