McGrath, United States offers 4 beaches perfect for sunbathing, surfing, swimming, and more. McGrath, Alaska, United States, is known for its proximity to the Iditarod Trail Sled Dog Race. The best time to travel to McGrath, United States, is in July when the average air temperature is around 61°F (16°C) and the water temperature is approximately 55°F (13°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!