Saltaire, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Saltaire, New York, United States, is known for its location on Fire Island, a popular summer destination with beautiful beaches and a relaxed, car-free environment. The best time to travel to Saltaire, United States, is during the summer months of June to August, when the average air temperature is around 75°F (24°C) and the water temperature is approximately 70°F (21°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!