The local climate is tropical with well-defined dry and humid seasons that result from northeast winter winds and southwest summer winds.
Officially name: Republic of Senegal
Capital: Dakar
Largest city: Dakar
Official language: French
Government: Semi-presidential republic
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).