Karongi, Rwanda offers 1 beach perfect for sunbathing, surfing, swimming, and more. Karongi is known for Lake Kivu and the Amahoro Island. The best time to travel to Karongi, Rwanda, is from June to September, with average air temperatures around 20-25°C (68-77°F) and water temperatures in Lake Kivu around 23-25°C (73-77°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!