Senegal is located on the west of the African continent. It lies between latitudes 12° and 17°N, and longitudes 11° and 18°W.
The local climate is tropical with well-defined dry and humid seasons that result from northeast winter winds and southwest summer winds.
Senegal's largest rivers—the Senegal, Siné, Saloum, Gambia, and Casamance—are sluggish, marsh-lined streams emptying into broad estuaries along the Atlantic Ocean. The Senegal River is the longest at 4,023 kilometers (2,500 miles).