Fishers Island, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Fishers Island is known for its exclusive private golf club, the Fishers Island Club. The best time to travel to Fishers Island, 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!