It's been known to snow in SA on the odd and very rare occasion! Powdered sugar actually...

Thanks for the info about the walking safaris. I will definately look into them. I hope this also helps the OP! Although it just might confuse things more...

I've also only ever experienced walking during the optional hour-long, sun-at-its-highest after lunch. The only time it was enjoyable was when I was me alone. Otherwise, there seems to be lots of impatience to get out of the heat. One guide did mention once that they encountered a male lion on one walk, who came quite close, and scared the guests half to death.