Lahusa, Sirombu, Indonesia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Lahusa, Sirombu, North Sumatra, Indonesia, is known for Nias Island, renowned for its traditional stone jumping and surfing spots. The best time to travel to Lahusa, Sirombu, Indonesia, is from May to September, when the average air temperature is around 27°C (81°F) and the water temperature is approximately 28°C (82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!