Kealia, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Kealia, Hawaii, United States, is known for Kealia Beach, a popular spot for surfing and whale watching. The best time to travel to Kealia, United States, is from April to October, with average air temperatures around 75-85°F and water temperatures near 75-80°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!