rainy season and a dry season. The rainy season starts in May and lasts about five months until September. Ségou's dry season includes a relatively mild period followed by a period of sweltering heat. The average yearly rainfall is about . 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 frequent during rainy season (hivernage). Demography As of the 2009 Mali Census, Ségou has a population of 130,690, up from 105,305 in 1998. A 2007 estimate put the city's population at 118,814. The population of the Ségou Region is largely rural, and nomadic semi-sedentary or sedentary. The population consists of many ethnic groups, such as Bambara, Bozo, Fulani, Soninke, Malinke and Toucouleur. The town of Ségou itself is home to a variety of ethnic groups, including the Malinke, the Soninke, the Fulani, and the Toucouleur, due to its complex history and status as a regional commercial center. Bambaras are mostly farmers and are the most numerous ethnic group. Their language is Bambara or Djoula. The Bozos are the second most populous ethnic group. They typically live near the shore of the Niger river, in small towns of small houses. The Bozo economy is based on fishing. Bozo people have a monopoly on the transport system because of their knowledge of the Niger, its shallows and seasonal lakes, and are regarded as the masters of water. The , a group known to specialize in fishing and boating, are largely concentrated in Ségou and its surroundings. The Malinké/Mandinka/Maninka are closely related to Bambaras: They share costumes, religious beliefs, and practices with the Bambaras. The Marka, Saracollé or Soninke are merchants and warriors. The Soninke people are great travelers and Muslims, and have largely conserved their traditions. Art and culture The Bambaras used to transmit their knowledge by oral tradition, hence much of their art and culture is unknown. Ségou's cultural heritage includes traditional musical instruments, wonderful griots, folkloric groups and the traditional masks and marionettes. The history of the Bambara state's traditional religious practices are ambiguous. They practice animism and fetishism as cultural practices, and also totemic and monism (cult of ancestors). The most famous Ségou handcrafts are based on pottery, weaving (blankets, wrappers and carpets), manufacturing of Bogolan (a distinctive variation of Mud cloth), painting and sculpture. Ségou is also regarded as the capital of