Seward, United States offers 16 beaches perfect for sunbathing, surfing, swimming, and more. Seward is known for Kenai Fjords National Park and the Alaska SeaLife Center. The best time to travel to Seward, United States, is from June to August, with average air temperatures around 55-65°F (13-18°C) and water temperatures around 50-55°F (10-13°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!