SUNNY COAST - 23-24 Deg C at present.

6 weeks time likely within a degree.
Further north 200+ kms likely stay stable.
Stingers - yep some always around - but dominantly after a few days of solid NE'ly
Long sleeve Rashie / board shorts covers if it is a problem.
I get wet 4 -5 times a week Boards / swimming / Kiting (never enough)- once this season opted not to go in due to stingers.
Having said that I always wear a shortie - SPF50+ and no stingers around the jewelry.
Full 3 mm will be

hot.