Umkomaas, South Africa offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Umkomaas is known for the Aliwal Shoal, a renowned scuba diving site. The best time to travel to Umkomaas, South Africa, is from April to September, when the average air temperature is around 20-25°C (68-77°F) and the water temperature is approximately 21-24°C (70-75°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!