Somalia officially the Federal Republic of Somalia, is a country located in the Horn of Africa. It is bordered by Ethiopia to the west, Djibouti to the northwest, the Gulf of Aden to the north, the Indian Ocean to the east, and Kenya to the southwest. Somalia has the longest coastline on the continent, and its terrain consists mainly of plateaus, plains and highlands. Hot conditions prevail year-round, along with periodic monsoon winds and irregular rainfall. Somalia has a population of around 10 million inhabitants. About 85% of local residents are ethnic Somalis, who have historically inhabited the northern part of the country. Ethnic minority groups make up the remainder of the nation's population, and are largely concentrated in the southern regions.