The climate of the archipelago is semitropical and has two seasons, summer and winter. During the summer, which extends from May through November, the climate is dominated by warm, moist tropical air masses moving north through the Caribbean. Midsummer temperatures range from 21 °C to 34 °C with a relative humidity of 60 to 100%. In winter months, extending from December through April, the climate is affected by the movement of cold polar masses from North America. Temperatures during the winter months range from 15 °C to 24 °C.
Yearly rainfall averages 1320 millimeters and is usually concentrated in the May-June and September-October periods. Rainfall often occurs in short-lived, fairly intense showers accompanied by strong gusty winds, which are then followed by clear skies.

Winds are predominantly easterly throughout the year but tend to become northeasterly from October to April and southeasterly from May to September. These winds seldom exceed twenty-four kilometers per hour except during hurricane season. Although the hurricane season officially lasts from June to November, most hurricanes in the Bahamas occur between July and October; as of late 1987, the last one to strike was Hurricane David in September 1979. Damage was estimated at US$1.8 million and mainly affected agricultural products. The most intense twentieth-century hurricane to strike the Bahamas was in 1929; winds of up to 225 kilometers per hour were recorded. Many lives were lost, and there was extensive damage to buildings, homes, and boats.
The Bahamas are a group of about 700 atolls and cays in the western Atlantic Ocean, of which only between 30 and 40 are inhabited. The largest of the islands is Andros Island, located 120 miles (190 km) southeast of Florida. The Bimini islands are to its northwest. To the North is the island of Grand Bahama, home to the second largest city in the country, Freeport. The island of Great Abaco is to its east. In the far south is the island of Great Inagua, the second largest island in the country. Other notable islands include Eleuthera Island, Cat Island, San Salvador Island, Acklins Island, Crooked Island, and Mayaguana . Nassau is the capital and largest city, located on New Providence. The islands have a subtropical climate, moderated by the Gulf Stream.
The islands are surface projections of the three oceanic Bahama Banks, the Little Bahama Bank, the Great Bahama Bank and the westernmost Cay Sal Bank. The highest point is only seventy meters above sea level on Long Island; the island of New Providence, where the capital city of Nassau is located, reaches a maximum elevation of only thirty-seven meters. The land on the Bahamas has a foundation of fossil coral, but much of the rock is oolitic limestone; the stone is derived from the disintegration of coral reefs and seashells. The land is primarily either rocky or mangrove swamp. Low scrub covers much of the surface area. Timber is found in abundance on four of the northern islands: Grand Bahama, Great Abaco, New Providence, and Andros. On some of the southern islands, low-growing tropical hardwood flourishes. Although some soil is very fertile, it is also very thin. Only a few freshwater lakes and just one river, located on Andros Island, are found in the Bahamas.
Although the area may have been populated previously, the seafaring Taino people moved into the southern Bahamas around the 7th century from Hispaniola and Cuba. These people came to be known as the Lucayans. There were an estimated 40,000+ Lucayans at the time of Columbus' arrival in 1492.
Christopher Columbus's first landfall in the New World was on an island he named San Salvador (known to the Lucayans as Guanahahani) which may be Samana Cay or present-day San Salvador Island (also known as Watling's Island), in the central part of the Bahamas archipelago. Here, Columbus made contact with the Lucayans and exchanged goods with them.
Parts of the Bahamas as seen from an aeroplaneBahamian Lucayans were later taken to Hispaniola as slaves; and within two decades, Lucayan societies ceased to exist due to forced labour, warfare, massacre, disease, emigration and intermarriage. After the Lucayan population was eliminated, the Bahamian islands were virtually unoccupied until English settlers led by William Sayle came from Bermuda seeking religious freedom in 1647. The Eleutherian Adventurers established settlements on the island of Eleuthera - the name derives from the Greek word for freedom. They later discovered New Providence and named it Sayle's Island. To survive, the settlers looted passing ships.
In 1670 King Charles II granted the islands to the Lord Proprietors of the Carolinas, who rented the islands from the king with rights of trading, tax, appointing governors, and administering the country. During proprietary rule, the Bahamas became a haven for pirates, including the infamous Blackbeard. To restore orderly government, the Bahamas was made a British crown colony in 1718 under the royal governorship of Woodes Rogers, who cracked down on piracy.
During the American Revolutionary War, the islands were a target for American naval forces under the command of Commodore Ezekial Hopkins. The capital of Nassau on the island of New Providence was occupied by US marines for a fortnight. In 1782, after the British defeat at Yorktown, a Spanish fleet appeared off Nassau, which surrendered without a fight. But the 1783 Treaty of Versailles - which ended the global conflict between Britain, France and Spain - returned the Bahamas to British sovereignty.
After the American Revolution, some 8,000 Loyalists and slaves moved to the Bahamas from New York, Florida and the Carolinas. The Americans established plantations on several out islands and became a political force in the capital. The British went on to abolish the slave trade in 1807, which led to the forced settlement on Bahamian islands of thousands of Africans liberated from slave ships by the Royal Navy. Slavery was finally abolished in the British Empire on August 1, 1834.
Modern political development began after the Second World War. The first political parties were formed in the 1950s and the British made the islands internally self-governing in 1964. In 1973, the Bahamas became fully independent, but retained membership in the Commonwealth of Nations. In 1967, Lynden Pindling became the first black premier of the colony, and in 1968 became prime minister. Another black Bahamian, Sir Milo Butler, was appointed governor-general upon independence.
Based on the pillars of tourism and offshore financial services, the Bahamian economy has prospered since the 1950s. Today, the country enjoys the third highest per capita income in the hemisphere. Despite this, there are significant challenges in areas such as education, health care, international narcotics trafficking and illegal immigration from Haiti.
The origin of the name "Bahamas" is unclear. It is thought to derive from the Spanish baja mar, meaning "shallow seas";[citation needed] others trace the name to the Lucayan word for Grand Bahama Island, ba-ha-ma "large upper middle land"