 Long rains normally occur in April and May averaging 69.1mm while short rains in October and November averaging 122mm.The county has a total population of 867,457 of which 434,976 are males, 432,444 females and 37 intersex persons.There are 125,763 household with an average household size of 6.9 persons per household and a population density 33 people per square kilometre.