Island Heights, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Island Heights, New Jersey, United States, is known for the John F. Peto Studio Museum and its picturesque waterfront along the Toms River. The best time to travel to Island Heights, 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!