Kisii's climate is characterized by mild temperatures, with averages ranging from 15°C to 35°C throughout the year. The warmest months are February and March, with averages around 25°C, while the coolest month is May, averaging around 22°C. June and July bring a slight dip in temperature, but it remains relatively stable. September and October experience a brief cool spell, with temperatures dropping to as low as 10°C, before warming up again by November. The overall trend shows a gentle warming from December to February, followed by a gradual cooling until May.