Castropol, Spain offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Castropol is known for its picturesque views of the Eo Estuary and the historic Church of Santiago. The best time to travel to Castropol, Spain, is from June to September, when the average air temperature is around 20-25°C (68-77°F) and the water temperature is approximately 18-22°C (64-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!