Anchorage Island, Cook Islands offers 1 beach perfect for sunbathing, surfing, swimming, and more. Anchorage Island is known for its stunning coral reefs and vibrant marine life, attracting snorkelers and divers from around the world. The best time to travel to Anchorage Island, Cook Islands, is from May to October, with average air temperatures around 77°F (25°C) and water temperatures near 79°F (26°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!