Harlan, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Harlan, Iowa, United States, is not typically known for travel and beach tourism. The best time to travel to Harlan, United States, is during late spring or early fall when the average air temperature is around 60-75°F (15-24°C), though specific water temperatures are not typically a consideration as Harlan is not known for large bodies of water. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!