Wellfleet, United States offers 31 beaches perfect for sunbathing, surfing, swimming, and more. Wellfleet is known for the Cape Cod National Seashore and the Wellfleet OysterFest. The best time to travel to Wellfleet, United States, is from June to September, with average air temperatures ranging from 65°F to 80°F and water temperatures around 65°F to 70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!