Bermeo, Spain offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Bermeo is known for San Juan de Gaztelugatxe, a stunning islet with a hermitage connected to the mainland by a winding stone bridge. The best time to travel to Bermeo, 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 20-22°C (68-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!