Grande Riviere Noire, Mauritius offers 1 beach perfect for sunbathing, surfing, swimming, and more. Grande Riviere Noire, Riviere Noire, Mauritius, is known for the Black River Gorges National Park and Tamarin Bay. The best time to visit Grande Riviere Noire, Mauritius, is from May to December, when the average air temperature is around 24-28°C (75-82°F) and the water temperature is approximately 23-27°C (73-81°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!