Napeague, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Napeague is known for the Napeague State Park and the iconic Clam Bar at Napeague. The best time to travel to Napeague, 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!