Bearing a tropical climate, Grenada is, as expected, humid and hot throughout the year, with a rainy and humid season from June to December, featuring irregular winds and an increased feeling of sultriness, and a relatively dry and cool season spanning from January to April with steady and constant northeast winds of moderate intensity being the main characteristic. Grenada, as any other Caribbean island, welcomes visitors with high temperatures year-round and hot summers, although the heat rarely gets unbearable due to the cooling sea breezes. The nights may feel a bit muggy, though, and the temperature ranges in the 22oC (72oF).
Overall, Grenada’s climate is typical of the Caribbean – warm, with very few temperature variations from month to month (even between seasons). It also has the most predictable temps of all islands belonging to the Caribbean region. At the same time, it features the highest rainfall compared to its other siblings, especially during the hurricane season.
Rainfall
The large, mountainous island of Grenada experiences more rainfall (in the form of thunderstorms or downpours) than the rest of the Caribbean, especially between the months of June and December, with the most intense being during the hurricane season (from July to November). However, these tropical storms are short-lasting, rarely hit Grenada directly, and are quite unlikely to make life difficult. The rainy and hot season begins around mid-April and late May when the frequency of downpours (and the temperature) increases gradually. Nevertheless, sometimes, a more intense (bad) weather wave may hit Grenada, without usually affecting the sunshine hours much.
It should also be noted that the islands located northeast of Grenada, namely Petit Martinique, and Carriacou, are receivers of significantly less rain than Grenada annually. This is primarily owed to the low height of their mountains and their small size.
|
Month |
Precip. (mm)
|
|
January
|
47.7
|
|
February
|
44.4
|
|
March
|
24.4
|
|
April
|
16.3
|
|
May
|
55.4
|
|
June
|
147.8
|
|
July
|
228.3
|
|
August
|
293.1
|
|
September
|
273.3
|
|
October
|
181.9
|
|
November
|
87.4
|
|
December
|
54.6
|
The Weather in the Mountainous Areas
That aside, the mountainous areas are distinguished by more cloudy weather, a bit lower temperatures, and more abundant precipitation than the other Grenada areas, as the altitude affects the Grenada weather significantly. Lastly, it should be noted that light rains often fall in forested regions, irrespective of the season.
The Weather Inland
Things change (compared to mountainous Grenada) the further one moves towards the interior of the island, where they are greeted with higher temperatures.
Average Temperatures
What is impressive with the Grenada weather is that one can expect very little variation in the average temperatures throughout the year. So, the island’s mean temperature is between 26oC (78.8oF) and 27.5oC (81.5oF), with no sudden drops or increases in temperatures through the months or seasons.
|
Month
|
Mean (°C)
|
Mean (°F)
|
|
January
|
26
|
78.8
|
|
February
|
26
|
78.8
|
|
March
|
26.5
|
79.7
|
|
April
|
27
|
80.6
|
|
May
|
27.5
|
81.5
|
|
June
|
27.5
|
81.5
|
|
July
|
27.5
|
81.5
|
|
August
|
27.5
|
81.5
|
|
September
|
27.5
|
81.5
|
|
October
|
27.5
|
81.5
|
|
November
|
27
|
80.6
|
|
December
|
26.5
|
79.7
|
Sunshine Hours
In general, Grenada enjoys an average of seven to eight sunshine hours per day (around 71% of daylight hours), especially throughout its coast. The sun's rays are the most abundant between January and May, and the month of August, although there is very little drop in sunshine the rest of the year.
|
Month
|
Average
|
|
January
|
8
|
|
February
|
8
|
|
March
|
8
|
|
April
|
8
|
|
May
|
8
|
|
June
|
7
|
|
July
|
7
|
|
August
|
8
|
|
September
|
7
|
|
October
|
7
|
|
November
|
7
|
|
December
|
7
|
Sea Temperature
The water temperature in Grenada remains inviting no matter when you hit the beaches. The warmest it can get is between September and October when the sea temperature ranges from 29oC (84oF) while the water temps drop by a couple of degrees in the December-April period. During this time, expect a water temperature of around 27oC (81oF) on average, which is still swimmable and enjoyable.
|
Month
|
°C
|
°F
|
|
January
|
27
|
81
|
|
February
|
27
|
81
|
|
March
|
27
|
81
|
|
April
|
27
|
81
|
|
May
|
28
|
82
|
|
June
|
28
|
82
|
|
July
|
28
|
82
|
|
August
|
28
|
82
|
|
September
|
29
|
84
|
|
October
|
29
|
84
|
|
November
|
28
|
82
|
|
December
|
27
|
81
|
Hurricanes
The Caribbean area is battered by hurricanes (cyclones and tropical storms), which pose the greatest danger for both locals and visitors alike. The hurricane season starts from June to November, though it is most likely that a hurricane may pass over the Caribbean from August to October. That being said, Grenada is rarely affected by these tropical storms as it sits on the southernmost part of the hurricane belt. In the last 70 years, though, only five hurricanes have hit Grenada, with the latest being in early September 2007. Nevertheless, if you will be traveling to Grenada during the hurricane season, it is advised to check your weather advisory first.
Humidity
Some months in Grenada are very humid while its humidity levels are quite high throughout the year. With nearly 80% relative humidity, November is the most humid month of the year, while March is the least humid one, with a relative humidity of slightly over 72%.
Wind
Most of the time, the wind feels no more than a moderate breeze, with average speeds of around 22 KPH (13.7 MPH or 11.9 knots), making Grenada ideal for water sports like windsurfing and sailing. The windiest months are April, May, and June while the rest of the months pamper visitors and islanders with refreshing gusts.
Bearing a tropical climate, Grenada is, as expected, humid and hot throughout the year, with a rainy and humid season from June to December, featuring irregular winds and an increased feeling of sultriness, and a relatively dry and cool season spanning from January to April with steady and constant northeast winds of moderate intensity being the main characteristic. Grenada, as any other Caribbean island, welcomes visitors with high temperatures year-round and hot summers, although the heat rarely gets unbearable due to the cooling sea breezes. The nights may feel a bit muggy, though, and the temperature ranges in the 22oC (72oF).
Overall, Grenada’s climate is typical of the Caribbean – warm, with very few temperature variations from month to month (even between seasons). It also has the most predictable temps of all islands belonging to the Caribbean region. At the same time, it features the highest rainfall compared to its other siblings, especially during the hurricane season.
Rainfall
The large, mountainous island of Grenada experiences more rainfall (in the form of thunderstorms or downpours) than the rest of the Caribbean, especially between the months of June and December, with the most intense being during the hurricane season (from July to November). However, these tropical storms are short-lasting, rarely hit Grenada directly, and are quite unlikely to make life difficult. The rainy and hot season begins around mid-April and late May when the frequency of downpours (and the temperature) increases gradually. Nevertheless, sometimes, a more intense (bad) weather wave may hit Grenada, without usually affecting the sunshine hours much.
It should also be noted that the islands located northeast of Grenada, namely Petit Martinique, and Carriacou, are receivers of significantly less rain than Grenada annually. This is primarily owed to the low height of their mountains and their small size.
|
Month |
Precip. (mm)
|
|
January
|
47.7
|
|
February
|
44.4
|
|
March
|
24.4
|
|
April
|
16.3
|
|
May
|
55.4
|
|
June
|
147.8
|
|
July
|
228.3
|
|
August
|
293.1
|
|
September
|
273.3
|
|
October
|
181.9
|
|
November
|
87.4
|
|
December
|
54.6
|
The Weather in the Mountainous Areas
That aside, the mountainous areas are distinguished by more cloudy weather, a bit lower temperatures, and more abundant precipitation than the other Grenada areas, as the altitude affects the Grenada weather significantly. Lastly, it should be noted that light rains often fall in forested regions, irrespective of the season.
The Weather Inland
Things change (compared to mountainous Grenada) the further one moves towards the interior of the island, where they are greeted with higher temperatures.
Average Temperatures
What is impressive with the Grenada weather is that one can expect very little variation in the average temperatures throughout the year. So, the island’s mean temperature is between 26oC (78.8oF) and 27.5oC (81.5oF), with no sudden drops or increases in temperatures through the months or seasons.
|
Month
|
Mean (°C)
|
Mean (°F)
|
|
January
|
26
|
78.8
|
|
February
|
26
|
78.8
|
|
March
|
26.5
|
79.7
|
|
April
|
27
|
80.6
|
|
May
|
27.5
|
81.5
|
|
June
|
27.5
|
81.5
|
|
July
|
27.5
|
81.5
|
|
August
|
27.5
|
81.5
|
|
September
|
27.5
|
81.5
|
|
October
|
27.5
|
81.5
|
|
November
|
27
|
80.6
|
|
December
|
26.5
|
79.7
|
Sunshine Hours
In general, Grenada enjoys an average of seven to eight sunshine hours per day (around 71% of daylight hours), especially throughout its coast. The sun's rays are the most abundant between January and May, and the month of August, although there is very little drop in sunshine the rest of the year.
|
Month
|
Average
|
|
January
|
8
|
|
February
|
8
|
|
March
|
8
|
|
April
|
8
|
|
May
|
8
|
|
June
|
7
|
|
July
|
7
|
|
August
|
8
|
|
September
|
7
|
|
October
|
7
|
|
November
|
7
|
|
December
|
7
|
Sea Temperature
The water temperature in Grenada remains inviting no matter when you hit the beaches. The warmest it can get is between September and October when the sea temperature ranges from 29oC (84oF) while the water temps drop by a couple of degrees in the December-April period. During this time, expect a water temperature of around 27oC (81oF) on average, which is still swimmable and enjoyable.
|
Month
|
°C
|
°F
|
|
January
|
27
|
81
|
|
February
|
27
|
81
|
|
March
|
27
|
81
|
|
April
|
27
|
81
|
|
May
|
28
|
82
|
|
June
|
28
|
82
|
|
July
|
28
|
82
|
|
August
|
28
|
82
|
|
September
|
29
|
84
|
|
October
|
29
|
84
|
|
November
|
28
|
82
|
|
December
|
27
|
81
|
Hurricanes
The Caribbean area is battered by hurricanes (cyclones and tropical storms), which pose the greatest danger for both locals and visitors alike. The hurricane season starts from June to November, though it is most likely that a hurricane may pass over the Caribbean from August to October. That being said, Grenada is rarely affected by these tropical storms as it sits on the southernmost part of the hurricane belt. In the last 70 years, though, only five hurricanes have hit Grenada, with the latest being in early September 2007. Nevertheless, if you will be traveling to Grenada during the hurricane season, it is advised to check your weather advisory first.
Humidity
Some months in Grenada are very humid while its humidity levels are quite high throughout the year. With nearly 80% relative humidity, November is the most humid month of the year, while March is the least humid one, with a relative humidity of slightly over 72%.
Wind
Most of the time, the wind feels no more than a moderate breeze, with average speeds of around 22 KPH (13.7 MPH or 11.9 knots), making Grenada ideal for water sports like windsurfing and sailing. The windiest months are April, May, and June while the rest of the months pamper visitors and islanders with refreshing gusts.