Ethiopia is the world’s 27th-largest country, comparable in size to Bolivia. It lies between the 3rd parallel north and the 15th parallel north and longitudes 33rd meridian east and 48th meridian east.
The major portion of Ethiopia lies on the Horn of Africa, which is the easternmost part of the African landmass. Bordering Ethiopia are Sudan and South Sudan to the west, Djibouti and Eritrea to the north, Somalia to the east and Kenya to the south. Within Ethiopia is a vast highland complex of mountains and dissected plateaus divided by the Great Rift Valley, which runs generally southwest to northeast and is surrounded by lowlands, steppes, or semi-desert. The great diversity of terrain determines wide variations in climate, soils, natural vegetation, and settlement patterns.
Ethiopia is an ecologically diverse country, ranging from the deserts along the eastern border to the tropical forests in the south to extensive Afromontane in the northern and southwestern parts. Lake Tana in the north is the source of the Blue Nile. It also has a large number of endemic species, notably the gelada, the walia ibex and the Ethiopian wolf (“Simien fox”). The wide range of altitude has given the country a variety of ecologically distinct areas, and this has helped to encourage the evolution of endemic species in ecological isolation.
The climate is temperate on the plateau and hot in the lowlands. At Addis Ababa, which ranges from 2,200 to 2,600 m (7,218 to 8,530 ft), maximum temperature is 26 °C (78.8 °F) and minimum 4 °C (39.2 °F). The weather is usually sunny and dry, but the short (belg) rains occur from February to April and the big (meher) rains from mid-June to mid-September. The climate of Ethiopia and its dependent territories varies greatly.