Lanai City, United States offers 9 beaches perfect for sunbathing, surfing, swimming, and more. Lanai City is known for the luxurious Four Seasons Resort Lanai and the stunning Hulopoe Bay. The best time to travel to Lanai City, United States, is from May to October, when the average air temperature is around 75°F (24°C) and the water temperature is approximately 77°F (25°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!