Rehoboth Beach, United States offers 9 beaches perfect for sunbathing, surfing, swimming, and more. Rehoboth Beach is known for its Rehoboth Beach Boardwalk, Funland amusement park, and Dogfish Head Brewery. The best time to travel to Rehoboth Beach is from late May to early September, with average air temperatures ranging from 70°F to 85°F and water temperatures from 65°F to 75°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!