Tathra, Australia offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Tathra is known for its historic Tathra Wharf and the stunning Mimosa Rocks National Park. The best time to travel to Tathra, Australia, is 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!