Saint Lucia, South Africa offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Saint Lucia, KwaZulu Natal, South Africa, is known for the iSimangaliso Wetland Park, a UNESCO World Heritage Site. The best time to travel to Saint Lucia, South Africa, is from November to March, with average air temperatures around 25°C (77°F) and water temperatures around 24°C (75°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!