Newhalem, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Newhalem is known for the North Cascades National Park and the Skagit River Hydroelectric Project. The best time to travel to Newhalem, United States, is during the summer months of July and August, when the average air temperature is around 70°F (21°C) and the water temperature in nearby lakes and rivers is approximately 60°F (16°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!