Nganani, Tanzania offers 1 beach perfect for sunbathing, surfing, swimming, and more. Nganani, Unguja South Region, Tanzania, is known for Jozani Chwaka Bay National Park. The best time to travel to Nganani, Tanzania, is from June to October, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 26°C (79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!