Coolum Beach, Australia offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Coolum Beach is known for its stunning beaches, Mount Coolum National Park, and the Coolum Beach Surf Club. The best time to visit Coolum Beach, Australia, is from September to November when the average air temperature is around 25°C (77°F) and the water temperature is approximately 22°C (72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!