January in Blantyre is the rainiest and the cloudiest month of the year. In January, the weather in Blantyre is typically warm. Average daily high temperature in January is about 26 degrees above zero. On average, Blantyre has 29 rainy and 2 sunny days in January. The rains are usually heavy. January as well as February, March, and December is considered the most uncomfortable time to visit Blantyre.