Otter Rock, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Otter Rock, Oregon, United States, is known for the Devil's Punchbowl State Natural Area. The best time to visit Otter 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!