If you want to visit South Africa, you must produce a valid visa before you can enter into the country. A visa will be issued for a visit for tourism or business purposes and is valid for a period of 90 days.
Some countries are exempted from visa control, which means that citizens from those countries do not need a visa to visit South Africa.
Visas are not issued at South African ports of entry, and airline officials must insist on visas before allowing passengers to board. If you arrive without a visa, immigration officials are obliged to put you onto a flight back to your home country.
Depending on your intended visit, you can apply for a Visitor’s Visa or a Transit Visa.
The lates on visa regulations: