Bakio, Spain offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Bakio is known for San Juan de Gaztelugatxe, a stunning islet with a picturesque hermitage connected to the mainland by a winding stone bridge. The best time to travel to Bakio, Spain, is from June to September, with average air temperatures around 20-25°C (68-77°F) and water temperatures around 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!