In the dry season, agricultural operation is impossible without irrigation. Farmers move to cities, creating population density and poverty. The dry season is one of two seasons in semi-arid Africa.  The dry season is characterized by low humidity, lack of water and depletion of subsistence crops between November to April yearly.

The rainy or wet season occurs during a warm season, or summer, precipitation takes place.  In the wet season, air quality improves, freshwater quality improves, and vegetation grows substantially, leading to crop yields late in the season. Rivers overflow their banks and drain into lakes within the white Volta river networks.    

In the dry season, agricultural operation is impossible without irrigation. Farmers move to cities, creating population density and poverty. The dry season is one of two seasons in semi-arid Africa.  The dry season is characterized by low humidity, lack of water, and depletion of subsistence crops between November to April yearly.