Gautegiz Arteaga, Spain offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Gautegiz Arteaga is known for the Urdaibai Biosphere Reserve. The best time to travel to Gautegiz Arteaga, Spain, is from June to September, with average air temperatures around 68-77°F (20-25°C) and water temperatures around 66-72°F (19-22°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!