Armintza, Spain offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Armintza is known for its picturesque harbor and the nearby Urdaibai Biosphere Reserve. The best time to travel to Armintza, Spain, is from June to September, when the average air temperature is around 70-75°F (21-24°C) and the water temperature is approximately 68-72°F (20-22°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!