 These include the Southern African Large Telescope (SALT), the largest single optical telescope in the southern hemisphere.Sutherland is the coldest town in South Africa, with an average yearly temperature of 11.3 °C and an average annual minimum temperature of 2.8 °C; although the farm Buffelsfontein near Molteno holds the official lowest temperature record in Continental South Africa, of .South African islands have experienced significantly lower temperatures, however, with certain South African islands having sub-Antarctic, highland climates.