Winter in South Africa (May to July) is characterized in the higher-lying areas of the interior plateau by dry, sunny, crisp days and cold nights, sometimes with heavy frosts. It’s a good idea to bring warm clothes.
The hot, humid KwaZulu-Natal coast, as well as the Lowveld (lower-lying areas) of Mpumalanga and Limpopo provinces, offer fantastic winter weather with sunny, warmish days and virtually no wind or rain.
The Western Cape gets most of its rain in winter, with quite a few days of cloudy, rainy weather. However, these are always interspersed with wonderful days to rival the best of a British summer.
The high mountains of the Cape and the Drakensberg in KwaZulu-Natal usually get snow in winter.