Jacksonville Beach, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Jacksonville Beach is known for its vibrant boardwalk, the Jacksonville Beach Pier, and the Beaches Museum. The best time to visit Jacksonville Beach is from March to May, with average air temperatures around 70-80°F and water temperatures ranging from 65-75°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!