Terra Alta, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Terra Alta is known for Alpine Lake Resort, a popular destination for outdoor recreation and relaxation. The best time to travel to Terra Alta, United States, is in late spring or early fall when the average air temperature is around 60-70°F and water temperature is typically cooler, around 50-60°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!