Kersik, Indonesia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Kersik, Kalimantan Timur, Indonesia, is known for the Kersik Luway Nature Reserve, which is famous for its unique white sand and diverse orchid species. The best time to travel to Kersik, Indonesia, is during the dry season from May to September, with average air temperatures around 27°C (81°F) and water temperatures near 29°C (84°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!