Ladara, Indonesia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Ladara, North Sumatra, Indonesia, is known for its proximity to Lake Toba, the largest volcanic lake in the world. The best time to travel to Ladara, Indonesia, is 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!