The tropical climate has rainy and dry seasons, high temperatures, and almost constant humidity. The rainy season extends from May to November but is heaviest between July and September, when over half of the annual rainfall occurs. In Freetown, annual rainfall is 150 inches or more; inland areas receive less. The beginning and end of the rainy season are marked by frequent strong electrical storms, similar to those occurring during the hot summer months in the eastern U.S. Coastal temperatures during the rainy season range from a daily high of about 80°F. to a nightly low of about 76°F.
Relative humidity in Freetown rarely falls below 80%, except when the harmattan reaches the coast. This current of dry, dusty air flows from the Sahara Desert toward the south and west, usually reaching Sierra Leone in December. During this season, which lasts through February, Freetown experiences its coolest weather.
coastal belt of mangrove swamps, wooded hill country, upland plateau, mountains in east
diamonds, titanium ore, bauxite, iron ore, gold, chromite
dry, sand-laden harmattan winds blow from the Sahara (December to February); sandstorms, dust storms
113 Square Miles
294 Square Kilometers
rapid population growth pressuring the environment; overharvesting of timber, expansion of cattle grazing, and slash-and-burn agriculture have resulted in deforestation and soil exhaustion; civil war depleting natural resources; overfishing
Environment - International Agreements:
party to: Biodiversity, Climate Change, Climate Change-Kyoto Protocol, Desertification, Endangered Species, Law of the Sea, Marine Life Conservation, Ozone Layer Protection, Ship Pollution, Wetlands
signed, but not ratified: Environmental Modification