The country is less than 48.2 km (30 miles) wide at its widest point, with a total area of 11,300 km². Approximately 1,300 km² of The Gambia's area is covered by water. The Gambia is the smallest country on the continent of Africa. In comparative terms the Gambia has a total area which is slightly less than that of the island of Jamaica. The western side of the country borders the North Atlantic Ocean with 50 miles of coastline.
The climate of The Gambia is tropical. There is a hot and rainy season, normally from June until November, but from then until May there are cooler temperatures with less precipitation. The climate in The Gambia is about the same as that found in neighbouring Senegal, southern Mali, and the northern part of Benin.
Its present boundaries were defined in 1889 after an agreement between the United Kingdom and France. During the negotiations between the French and the British in Paris, the French initially gave the British approximately 200 miles (320 km) of the Gambia River to control. Starting with the placement of boundary markers in 1891, it took nearly fifteen years after the Paris meetings to determine the final borders of The Gambia. The resulting series of straight lines and arcs gave the British control of areas that are approximately 10 miles (16 km) north and south of the Gambia River.