Dennis, United States offers 36 beaches perfect for sunbathing, surfing, swimming, and more. Dennis, Massachusetts, United States, is known for the Cape Cod Museum of Art and the Cape Playhouse. The best time to travel to Dennis, United States, is from June to September, with average air temperatures around 70-80°F and water temperatures around 65-70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!
