Australia has abundant coastline with many great locations for kitesurfing in every state.
Victoria has an abundance of flat water and surf locations and reliable wind over the summer months.
Queensland has great kitesurfing in the tropics over the winter months and in the South East all year round.
Western Australia is famous for big surf breaks and strong reliable winds over the summer. There is great flatwater riding too.
Tasmania has a variety of flatwater and surf locations and very few kitesurfers.
New South Wales has a good variety of excellent kitesurfing locations for both wave and flat water riding. Note that kitesurfing is not allowed on Sydney Harbour.