Manypeaks, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Manypeaks, Western Australia, Australia, is known for the Stirling Range National Park and its proximity to the scenic coastline of the Southern Ocean. The best time to travel to Manypeaks, 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!