Grand River South East, Mauritius offers 1 beach perfect for sunbathing, surfing, swimming, and more. Grand River South East is known for its stunning waterfalls and proximity to idyllic beaches in Mauritius. The best time to travel to Grand River South East, Mauritius, is from May to December, with average air temperatures around 24-28°C (75-82°F) and water temperatures around 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!