Kleinsee, South Africa offers 1 beach perfect for sunbathing, surfing, swimming, and more. Kleinsee is known for its diamond mining history and the nearby Namaqua National Park. The best time to travel to Kleinsee, South Africa, is from November to March, with average air temperatures around 20-25°C (68-77°F) and water temperatures around 15-18°C (59-64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!