President Cyril Ramaphosa has called it "a catastrophe of enormous proportions", according to Africa news.
South Africa's leader was visiting survivors in one of the townships in the city of Durban which has been struck by floods and mudslides stoked by record rains.
At least 300 people have died after roads and hillsides were washed away and homes collapsed. The search for missing persons is still going on and the death toll is expected to rise. One family is said to have lost 10 members in the devastating floods.