Barragga Bay, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Barragga Bay, New South Wales, Australia, is known for Mimosa Rocks National Park. The best time to visit Barragga Bay, Australia, is during the summer months from December to February, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 21°C (70°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!