As large parts of Ambazonia are in the Western High Plateau, they have a somewhat cooler climate than the surrounding areas in Cameroon and Nigeria. The lowlands along the coast and the river valleys of Manyu, both of which are parts of the Benue Trough, are warmer. Most of Ambazonia has a tropical monsoon climate, with the coastal plain containing some of the rainiest places in the world (such as the village of Debundscha). The northeastern parts of Northwest Region (including the city of Bamenda) have a tropical savanna climate, with distinct wet and dry seasons. At higher altitudes, such as the Oku Massif and Mount Cameroon, there are pockets where the temperatures fall sufficiently to be classified as a warm-summer Mediterranean climate. The top of Mount Cameroon has a polar climate of the tundra variant, unique in West Africa and extremely rare so close to the Equator.