Kalmus Beach at the end of Ocean Street in Hyannis is considered by some to offer the best windsurfing on the Cape in the spring, summer and fall. The steady breezes, warm waters and consistent waves off Nantucket Sound draw windsurfers from all over. A beach house at the end of the lot provides restrooms, showers and a tasty snack bar. This is a large beach with plenty of parking space to accommodate visitors.