Sierra Leone is located on the west coast of Africa, between the 7th and 10th parallels north of the equator. Sierra Leone is bordered by Guinea to the north and northeast, Liberia to the south and southeast, and the Atlantic Ocean to the west.
In the central part of the country is a region of lowland plains, containing forests, bush and farmland, that occupies about 43% of Sierra Leone's land area. Starting in the west, Sierra Leone has some 400 km (249 mi) of coastline, giving it both bountiful marine resources and attractive tourist potential. This is followed by low-lying mangrove swamps, rain-forested plains and farmland. The national capital Freetown sits on a coastal peninsula, situated next to the Sierra Leone Harbor, the world's third largest natural harbour.
The climate is tropical, with two seasons determining the agricultural cycle: the rainy season from May to November, and a dry season from December to May, which includes harmattan, when cool, dry winds blow in off the Sahara Desert and the night-time temperature can be as low as 16 °C (60.8 °F). The average temperature is 26 °C (78.8 °F) and varies from around 26 °C (78.8 °F) to 36 °C (96.8 °F) during the year.