Woonona, Australia offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Woonona, New South Wales, Australia, is known for its proximity to the scenic Illawarra Escarpment and the beautiful Woonona Beach. The best time to travel to Woonona, Australia, is from December to February, with average air temperatures around 25°C (77°F) and water temperatures near 22°C (72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!