Seal Rock, United States offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Seal Rock, Oregon, United States, is known for Seal Rock State Recreation Site, which features picturesque coastal rock formations and abundant wildlife viewing opportunities. The best time to visit Seal Rock, United States, is during the summer months of June to August, when the average air temperature is around 60-70°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!