The Climate in General
Although Nairobi is situated quite close to the Equator (See map of Kenya), its altitude of about 5,500 feet (1700 metres) results in enjoying an equable as opposed to a tropical climate, with temperatures neither uncomfortably low at night.
The main features of the climate are the existence of definite wet and dry seasons, and the absence of any large seasonal change in temperature. For convenience the year can be subdivided into four seasons as follows:-
Mid-December to Mid-March: Warm, sunny, dry.
Mid- March to May: Main rainy season.
June to Mid-October: Cool, rather cloudy (especially July-August), dry.
Mid-October to Mid-December Secondary rainy seasons.
The only period of the year when the weather can be rather trying is during the hot, dry period shortly before the rains break in March. At this time mid-day temperatures rise to nearly 32°C, the relative humidity may fall to 10%, and a moderately strong easterly wind tends to raise the dust.