Winthrop, United States offers 15 beaches perfect for sunbathing, surfing, swimming, and more. Winthrop is known for its Old West-themed downtown and proximity to the North Cascades National Park. The best time to travel to Winthrop, United States, is in July when the average air temperature is around 85°F (29°C) and the average 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!
