I expect it happens most years.
The comments are rather funny.
Apparently venturing out in 1" of slushy snow is selfish as the emergency services might need to be called.
They do seem a bit short of sensible clothes though.
Should send out wellies ...

http://www.news24.com/Multimedia/MyNews24/Snow-on-Table-Mountain-20130830 

Much more here - Western Cape.
That does look exceptional.
http://www.news24.com/Multimedia/MyNews24/Snow-in-the-Western-Cape-20130830