Boat Harbour Beach, Australia offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Boat Harbour Beach, Tasmania, Australia, is known for its stunning white sandy beaches and clear turquoise waters. The best time to visit Boat Harbour Beach, Australia, is during the summer months of December to February, when the average air temperature is around 20-25°C (68-77°F) and the water temperature is approximately 18-20°C (64-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!