Peaceful Bay, Australia offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Peaceful Bay is known for Peaceful Bay Beach and the Bibbulmun Track. The best time to visit Peaceful Bay, Australia, is during the summer months of December to February, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 20°C (68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!