Port Allen, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Port Allen, Hawaii, United States, is known for its proximity to the Na Pali Coast and the Port Allen Marina Center, which serves as a departure point for various ocean tours. The best time to travel to Port Allen, United States, is in the spring (March to May) when the average air temperature is around 70-80°F and the water temperature is approximately 65-75°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!