Hi there - try this link - it will give you an idea of locations and wind. Its a bit old and some spots aren't sailed very often
Small windsurf crew and usually spread out from Northern beaches to south coast
www.windsurfing.org/sa_beaches_metro.htm - other locations are linked - look at Google Maps
Been plenty of sailing this week and lots on the water - forecast is a bit ordinary for the next week though
See you on the water
Cheers