Weather is probably a major factor when you plan your trip to Kaimosi, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually February and March with an average temp of 70°F, while the coldest months are June and July with an average of 67°F. The rainiest months in Kaimosi are April, May, November, and October, with each month seeing an average of 10 inches of rainfall.