Betanzos, Spain offers 10 beaches perfect for sunbathing, surfing, swimming, and more. Betanzos is known for its historic architecture and proximity to beautiful beaches in Galicia, Spain. The best time to travel to Betanzos, Spain, is during late spring to early autumn (May to September), when the average air temperature ranges from 18°C to 25°C (64°F to 77°F) and the water temperature is around 16°C to 20°C (61°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!