Turquoise Coast, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Turquoise Coast, Western Australia, is known for the Pinnacles Desert in Nambung National Park. The best time to travel to the Turquoise Coast, Australia, is from September to November, with average air temperatures around 20-25°C (68-77°F) and water temperatures around 18-22°C (64-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!