Which Kenyan regions have the driest and most unpredictable rainfall?

In Kenya, the regions characterized by the driest conditions and most unpredictable rainfall are the semiarid and arid areas located in the north, northeast, and south of the country.1

These regions experience high temperatures and very erratic precipitation, with annual rainfall totals typically reaching only about 10 inches (250 mm) in the north and less than 20 inches (500 mm) in the south. Additionally, the eastern plateau region faces challenges with agriculture due to extremely variable precipitation, which averages between 20 and 30 inches (500 to 760 mm) annually. These arid and semiarid zones are also prone to soil erosion, exacerbated by overgrazing and cultivation.12