Fox Island, United States offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Fox Island is known for the Fox Island Historical Museum and the scenic views of the Puget Sound. The best time to visit Fox Island, United States, is during the summer months of June to August, when the average air temperature is around 70°F (21°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!