Hey
I live in Mullaloo the next suburb across from ocean reef and Mullaloo Beach is quite a good kitesurfing spot for the SW and the NW and about 1km from mullaloo south there is pinaroo point this is a popular spot and good for the same winds.
Hope to see you around
Sam

And i dont no what the temp of the water is but around that time you wouldnt need a wettie