O Barrento, Spain offers 6 beaches perfect for sunbathing, surfing, swimming, and more. O Barrento is known for its scenic coastal landscapes and tranquil beaches. The best time to travel to O Barrento, Spain, is during late spring to early summer (May to June), when the average air temperature ranges from 18°C to 25°C (64°F to 77°F) and the water temperature is around 17°C to 20°C (63°F to 68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!