If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Mzuzu: The hottest months are usually November and October with an average temp of 70°F, while the coldest months are July and June with an average of 61°F. The rainiest months in Mzuzu are January, February, December, and March, with each month seeing an average of 8 inches of rainfall.