A nice thing about autumn in Sydney are the fun wine & food festivals held many weekends, some right on the beach. All the regional vineyards have booths and there's also tres' yummy local food. Ziggy and I have taken full advantage and a nice feature is that you can sample the wines before shelling out for a full glass.
These festivals are quite popular and here's the view from the "Jazz & Shiraz" fest at Cronulla Beach. (It doesn't seem to rhyme until you've had a few wine samples...)