Mount William, Australia offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Ireland Island, Sandys, Bermuda, is known for the Royal Naval Dockyard. The best time to travel to Mount William, Australia, is during the summer months of December to February, when the average air temperature is around 20-25°C (68-77°F) and water temperatures in nearby bodies are typically cooler, around 15-20°C (59-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!