February in Johannesburg is the warmest month of the year. In February, the weather in Johannesburg is typically warm. Average daily high temperature in February is about 26 degrees above zero. On average, Johannesburg has 14 rainy, 11 sunny, 3 partly cloudy, and 1 cloudy day in February. The rains are usually heavy. February as well as January, November, and December is considered the most uncomfortable time to visit Johannesburg.