Adelaide, Australia offers 10 beaches perfect for sunbathing, surfing, swimming, and more. Adelaide, South Australia, Australia, is known for the Adelaide Festival, Adelaide Oval, and the Barossa Valley wine region. The best time to travel to Adelaide, Australia, is from March to May, with average air temperatures ranging from 15°C to 25°C and water temperatures around 18°C. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!