South Africa has 3 capital cities.  I will focus on Cape Town.  It has ocean currents as a temperature control.  The geographic location gives it a Mediterranean climate mostly.  The latitude and longitude is 33.9253 degrees S, 18.4239 degrees E.  The warmest month in Cape Town is February and an average monthly temperature of 69.9 degrees F.  The coldest month in Cape Town is July and an average monthly temperature of 54.1 degrees F (World Climates). The annual range of temperature is 15.8 degrees F.

One of the temperature controls for Cape Town is ocean currents.  It is located on the coast of the country and experiences ocean breezes.  The two main currents that Cape Town is affected by are the Agulhas current and the Benguela current.  Agulhas is a warm current and Benguela is a cold current.  The currents keep the temperature mild. A temperature control that does not affect Cape Town is elevation.  It is not high enough to be affected by the change of pressure and air density.

I think that South Africa will not be affected too much in the future in climate.  The ocean currents will help keep the temperature mild and might just get a little bit hotter.