Lake Powell, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Lake Powell is known for its stunning red rock canyons and recreational water activities. The best time to visit Lake Powell is in late spring or early fall, with average air temperatures around 70-85°F and water temperatures ranging from 70-75°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!