Nehalem, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Nehalem, Oregon, United States, is known for Nehalem Bay State Park and the scenic Nehalem River. The best time to travel to Nehalem, United States, is during the summer months of July and August, when the average air temperature is around 65-70°F and the water temperature is approximately 55-60°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!