Samoa, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Samoa, California, United States, is known for the Samoa Dunes Recreation Area and the historic Samoa Cookhouse. The best time to travel to Samoa, United States, is from May to October, with average air temperatures around 80-85°F (27-29°C) and water temperatures about 82°F (28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!