Windy Harbor, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Costacabana is known for its beautiful beaches and vibrant coastal atmosphere. The best time to visit Windy Harbor, 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!