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Grenada: Geography
Country Study > Chapter 3 > The Society and Its Environment > Geography

GEOGRAPHY


Grenada and its largely uninhabited outlying territories are the most southerly of the Windward Islands.

Part of the volcanic chain in the Lesser Antilles arc, Grenada and its possessions generally vary in elevation from under 300 meters to over 600 meters above sea level. Grenada is more rugged and densely foliated than its outlying possessions, but other geographical conditions are more similar. Grenada's landmass rises from a narrow, coastal plain in a generally north-south trending axis of ridges and narrow valleys. Mount St. Catherine is the highest peak at 840 meters.

Although many of the rocks and soils are of volcanic origin, the volcanic cones dotting Grenada are long dormant. Some of the drainage features on Grenada remain from its volcanic past. There are a few crater lakes, the largest of which is Grand Etang. The swift upper reaches of rivers, which occasionally overflow and cause flooding and landslides, generally cut deeply into the conic slopes. By contrast, many of the water courses in the lowlands tend to be sluggish and meandering.

The abundance of water is primarily caused by the tropical, wet climate. Yearly precipitation, largely generated by the warm and moisture-laden northeasterly trade winds, varies from more than 350 centimeters on the windward mountainsides to less than 150 centimeters in the lowlands. The greatest monthly totals are recorded throughout Grenada from June through November, the months when tropical storms and hurricanes are most likely to occur. Rainfall is less pronounced from December through May, when the equatorial low-pressure system moves south. Similarly, the highest humidities, usually close to 80 percent, are recorded during the rainy months, and values from 68 to 78 percent are registered during the drier period. Temperatures averaging 29°C are constant throughout the year, however, with slightly higher readings in the lowlands. Nevertheless, diurnal ranges within a 24-hour period are appreciable: between 26°C and 32°C during the day and between 19°C and 24°C at night.

Data as of November 1987




Last Updated: November 1987


Editor's Note: Country Studies included here were published between 1988 and 1998. The Country study for Grenada was first published in 1987. Where available, the data has been updated through 2008. The date at the bottom of each section will indicate the time period of the data. Information on some countries may no longer be up to date. See the "Research Completed" date at the beginning of each study on the Title Page or the "Data as of" date at the end of each section of text. This information is included due to its comprehensiveness and for historical purposes.

Note that current information from the CIA World Factbook, U.S. Department of State Background Notes, Australia's Department of Foreign Affairs and Trade Country Briefs, the UK's Foreign and Commonwealth Office's Country Profiles, and the World Bank can be found on Factba.se.

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