Weather is only one factor, but it can really affect your travel plans, especially when you're planning an extended stay in Nkayi. The hottest months are usually September and March with an average temp of 78°F, while the coldest months are July and June with an average of 76°F. The rainiest months in Nkayi are November, December, April, and March, with each month seeing an average of 8 inches of rainfall.