Illa de Arousa, Spain offers 12 beaches perfect for sunbathing, surfing, swimming, and more. Illa de Arousa is known for its beautiful beaches and the Natural Park of Carreiron. The best time to travel to Illa de Arousa, 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 18-22°C (64-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!