In January, the weather in Pietermaritzburg is typically warm. Average daily high temperature in January is about 23 degrees above zero. On average, Pietermaritzburg has 23 rainy, 6 sunny, 1 cloudy, and 1 partly cloudy day in January. The rains are usually heavy. January as well as February, October, November, and December is considered the most uncomfortable time to visit Pietermaritzburg.