Weather is probably a major factor when you plan your trip to Nkayi, and keep in mind that cheaper options are usually available when the weather isn't as good. 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.