December in Pietermaritzburg is the rainiest month of the year. In December, the weather in Pietermaritzburg is typically warm. Average daily high temperature in December is about 24 degrees above zero. On average, Pietermaritzburg has 22 rainy, 4 sunny, 4 partly cloudy, and 1 cloudy day in December. The rains are usually heavy. December as well as January, February, March, and October is considered the most uncomfortable time to visit Pietermaritzburg.