The Ségou region is characterized by a semi-arid climate and
irrigated by two important waterways: the Niger and the Bani River. Ségou
has two seasons: a rainy season and a dry season. The rainy season starts in
June and lasts about four months until September. Ségou's dry season includes a
cold period and a period of heat. The average yearly rainfall is about
513 mm. The harmattan is the dominant wind in the dry season and
it blows from north to south. The monsoon blowing from south to north-west is
more frequent during rainy