Fasnia, Spain offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Fasnia is known for the Teide National Park and its proximity to Mount Teide. The best time to travel to Fasnia, Spain, is from May to October, with average air temperatures ranging from 70°F to 82°F and water temperatures from 70°F to 75°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!