Weather Locations in Grenada

Grenada Weather Overview

In the south-eastern Caribbean Sea sits Grenada, an island nation made up of the southern Grenadines. Grenada enjoys a tropical climate; summers are hot and humid with high rainfall, and winters are slightly cooler and breezy with minimal rainfall. The islands are just on the southern edge of the hurricane belt and are sometimes visited by these destructive tropical cyclones.

Year round, temperatures stay very high. Temperatures measured in St. George’s on Grenada Island’s coast can be seen as representative of the temperature on the smaller islands. In St. George's, winter sees an average high of 29°C. Summer sees an average high of 30°C. There is a colossal peak in September of… 31°C. Average night time temperatures are similarly constant, never falling below 20°C. Choosing when to go to Grenada is unlikely to hinge on the temperature. Other weather conditions vary to a greater extent.

Rainfall is the greatest variable in Grenada. As tropical islands it is never possible to rule out the chance of rain but precipitation levels are dramatically higher during the wet season. The dry season, from January till May, still sees regular rainfall. At either end of the dry season it is typical for rain to fall on fourteen days of the month, while at its driest from February to April, ten days are expected to see rain each month. This rain usually falls in short showers which are soon over but almost impossible to predict. 

The wet season, from June till December, sees at least fifteen days of rain per month. The season peaks in July and August which see on average twenty and eighteen days of rain per month respectively. Conditions are generally muggy, fog sometimes forms and heavy rain falls in windy storms. Thunderstorms are not rare and this time of year also includes the hurricane season, which falls between June and November. The risk of being hit by a hurricane is not very high, but if a hurricane does form in the vicinity of Grenada then the risk level jumps up due to Grenada’s position in the usual path of hurricanes. Grenada has been hit by three hurricanes in the last fifty years. October and November see the greatest risk of hurricanes. It is important to check on hurricane activity before you take your vacation; ignoring the statistics, if a hurricane is likely to form then the area is best avoided. However, the wet season should not be ruled out as a time to visit Grenada as rain usually only lasts for short periods, and hurricanes remain unlikely, especially in early hurricane season.

The dry season is certainly the preferred time to visit Grenada due to the reduced rainfall, and also because the high temperatures are tempered by north-easterly trade winds. Apart from turning Grenada’s beaches into a sunbathing Mecca, these conditions also make the Caribbean side of the islands perfect for windsurfing and sailing; sheltered by the islands from Atlantic currents, the Caribbean is usually calm and warm with little to no break. The sea temperature does not fall below a bathwater 27°C all year, peaking in September and October at 29°C. Windsurfing is possible year round, with the dry season trade winds providing areas suited to the more advanced windsurfer. The Atlantic side is also a viable windsurfing spot, though definitely better suited to the advanced windsurfer; a combination of high winds and shallow reefs make it quite treacherous. The calm, warm waters of the Caribbean side also make for easy swimming and high underwater visibility; those interested in exploring the surrounding coral reef systems will find optimum conditions during the dry season. The east side of the islands is also dive-able, attracting different species such as turtles and big game fish.

Grenada does see great regional variation in weather conditions due to its mountainous terrain. Higher altitudes are always cooler and the rainforests that thrive on the mountainsides are often hidden by thick mist or fog. The mountains see regular rainfall year round with accordingly higher rainfall in the wet season. During the dry season, much of Grenada’s rain sticks to these forested, mountainous regions, leaving the coasts dry.

Grenada and its Grenadines form the southern end of the chain of the Lesser Antilles. They are just north of the northern coast of Venezuela and the islands of Trinidad and Tobago, and just southwest of Barbados and St. Lucia. Their warmth can be attributed to their near-equatorial position between the Caribbean Sea and Atlantic Ocean while trade winds prevent the island from extremes of heat. Grenada’s mountains and surrounding seas can be thanked for the high levels of rainfall that give the islands their lush, exotic vegetation. The Caribbean Islands are areas of unique biodiversity supporting rare and varied ecosystems that have been largely destroyed elsewhere.  Much of the nation is relatively unspoilt with the vast majority of the population living on Grenada where tourism is concentrated. The smaller islands, even Carriacou which is the second largest island, support themselves through fishing and boat-making. If you would like to purchase a slice of this tropical paradise, Ronde Island is currently for sale at $100,000,000.

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