Geography and climate

At 475,442 square kilometres (183,569 sq mi), Cameroon is the world's 53rd-largest country. It is comparable in size to Papua New Guinea and somewhat larger than the U.S. state of California. The country is located in Central and West Africa on the Bight of Bonny, part of the Gulf of Guinea and the Atlantic Ocean. Tourist literature describes Cameroon as "Africa in miniature" because it exhibits all major climates and vegetation of the continent: coast, desert, mountains, rainforest, and savanna. The country's neighbours are Nigeria to the west; Chad to the northeast; the Central African Republic to the east; and Equatorial Guinea, Gabon, and the Republic of the Congo to the south.

Cameroon is divided into five major geographic zones distinguished by dominant physical, climatic, and vegetative features. The coastal plain extends 15 to 150 kilometres (10 to 90 mi) inland from the Gulf of Guinea and has an average elevation of 90 metres (295 ft).Exceedingly hot and humid with a short dry season, this belt is densely forested and includes some of the wettest places on earth.The South Cameroon Plateau rises from the coastal plain to an average elevation of 650 metres (2,130 ft).Equatorial rainforest dominates this region, although its alternation between wet and dry seasons makes it is less humid than the coast.

An irregular chain of mountains, hills, and plateaus known as the Cameroon range extends from Mount Cameroon on the coast—Cameroon's highest point at 4,095 metres (13,435 ft)]—almost to Lake Chad at Cameroon's northern tip. This region has a mild climate, particularly on the Western High Plateau, although rainfall is high. Its soils are among Cameroon's most fertile, especially around volcanic Mount Cameroon.Volcanism here has created crater lakes. On 21 August 1986, one of these, Lake Nyos, belched carbon dioxide and killed between 1,700 and 2,000 people.

The southern plateau rises northward to the grassy, rugged Adamawa Plateau. This feature stretches from the western mountain area and forms a barrier between the country's north and south. Its average elevation is 1,100 metres (3,600 ft)and its temperature ranges from 22 to 25 °C (72 to 77 °F) with high rainfall.The northern lowland region extends from the edge of the Adamawa to Lake Chad with an average elevation of 300 to 350 metres (980 to 1,150 ft).Its characteristic vegetation is savanna scrub and grass. This is an arid region with sparse rainfall and high median temperatures.

Cameroon has four patterns of drainage. In the south, the principal rivers are the Ntem, Nyong, Sanaga, and Wouri. These flow southwestward or westward directly into the Gulf of Guinea. The Dja and Kadéï drain southeastward into the Congo River. In northern Cameroon, the Bénoué River runs north and west and empties into the Niger. The Logone flows northward into Lake Chad, which Cameroon shares with three neighbouring countries.