The abundance of water that characterizes Grenada 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 December 1989

NOTE: The information regarding Grenada on this page is re-published from The Library of Congress Country Studies and the CIA World Factbook. No claims are made regarding the accuracy of Grenada Climate information contained here. All suggestions for corrections of any errors about Grenada Climate should be addressed to the Library of Congress and the CIA.