Souillac, Mauritius offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Souillac, Savanne, Mauritius, is known for Gris Gris Beach and the Rochester Falls. The best time to travel to Souillac, Mauritius, is from May to December, when the average air temperature is around 24°C (75°F) and the water temperature is approximately 25°C (77°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!