December weather forecast
Saint George's, Grenada

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A large ship on the clear calm waters of the Saint George
A large ship on the clear calm waters of the Saint George's harbor in Grenada

Weather in December

Saint George's in December can be described as a tropical winter paradise. Conditions mellow down with temperature, rainfall, and sunlight hours decreasing to their lowest comparative standards of the year. Notably, the sea remains pleasantly warm, inviting for water sports enthusiasts. The notable change in December's weather is the rainfall reduction to 55mm (2.17"), representing winter's onset for Saint George's. Consequently, visitors during December can expect honey-colored sunshine days, mildly peppered with light showers.

Temperature

December displays an average high temperature of a still moderately hot 28.8°C (83.8°F), showing only minor variations from November. In Saint George's, the nocturnal temperatures throughout December show a marginal dip from the daytime averages, settling at a still moderately hot 24.4°C (75.9°F).

Rainfall

In Saint George's, in December, during 18 rainfall days, 55mm (2.17") of precipitation is typically accumulated. In Saint George's, during the entire year, the rain falls for 180 days and collects up to 1451mm (57.13") of precipitation.

Sea temperature

In December, the average sea temperature is 27.9°C (82.2°F).
Note: In water temperatures ranging between 25°C (77°F) and 29°C (84.2°F), activities such as swimming and diving become highly pleasurable for long durations.

Daylight

December has the shortest days of the year, with an average of 11h and 24min of daylight.
On the first day of the month, sunrise is at 06:12 and sunset at 17:40. On the last day of December, sunrise is at 06:27 and sunset at 17:53 AST.

Sunshine

June, July, September through December, with an average of 7h of sunshine, are months with the least sunshine.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 9. A UV Index estimate of 8 to 10 represents a very high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 9 during December translates into the following directions:
Be proactive in protecting yourself; skin and eyes can be harmed if left unprotected. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat. Even under cloud cover, use sunscreen with at least an SPF 30 generously and reapply frequently post every swim or outdoor exercise. Caution! The mirror effect of sand and water ups the UV radiation strength.

Frequently asked questions

How hot is it in Saint George's in December?

The average high-temperature, in December, in Saint George's, is 28.8°C (83.8°F), while the average low-temperature is 24.4°C (75.9°F).

How many days does it rain in December in Saint George's?

In Saint George's, Grenada, in December, during 18 rainfall days, 55mm (2.17") of precipitation is typically accumulated.

What is the sea water temperature in December in Saint George's?

In Saint George's, Grenada, the average seawater temperature in December is 27.9°C (82.2°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

What is the month with the shortest days in Saint George's?

December has the shortest days of the year in Saint George's, Grenada, with an average of 11h and 24min of daylight.

How many hours of daylight does Saint George's have in December?

In December, the average day length in Saint George's, Grenada, is 11h and 26min.

When is the sunrise / sunset in December in Saint George's?

On the first day of December in Saint George's, sunrise is at 06:12 and sunset at 17:40. On the last day of the month, sunrise is at 06:27 and sunset at 17:53 AST.

What are the months with the least sunshine in Saint George's?

June, July, September through December, with an average of 7h of sunshine, are months with the least sunshine.

How many hours of sunshine does Saint George's have in December?

In Saint George's, Grenada, the average sunshine duration in December is 7h.

What is the month with the lowest UV index in Saint George's?

December is the month with the lowest UV index in Saint George's, Grenada, with an average maximum UV index of 9.

What is the UV index intensity in December in Saint George's?

The average daily maximum UV index in December in Saint George's, Grenada, is 9. A UV Index of 8 to 10 symbolizes a very high hazard to health from exposure to Sun's UV rays.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in December
Saint George's, Grenada

Average temperature in December - Saint George
  • Average high temperature in December: 28.8°C

The warmest months (with the highest average high temperature) are April, May and September (30°C).
The month with the lowest average high temperature is January (28.3°C).

  • Average low temperature in December: 24.4°C

The month with the highest average low temperature is May (26.6°C).
The coldest months (with the lowest average low temperature) are January and February (23.8°C).

Average rainfall in December
Saint George's, Grenada

Average rainfall in December - Saint George
  • Average rainfall in December: 54.6mm

The wettest month (with the highest rainfall) is August (293.1mm).
The driest month (with the least rainfall) is April (16.3mm).

Average rainfall days in December
Saint George's, Grenada

Average rainfall days in December - Saint George
  • Average rainfall days in December: 18 days

The months with the highest number of rainy days are July and November (20 days).
The month with the least rainy days is April (7 days).

Average sea temperature in December
Saint George's, Grenada

Average sea temperature in December - Saint George
  • Average sea temperature in December: 27.9°C

The best month for swimming (with the highest average sea temperature) is September (29.6°C).
The coldest month (with the lowest average sea temperature) is March (27.2°C).

Average daylight in December /
Average sunshine in December
Saint George's, Grenada

Average daylight in December / Average sunshine in December - Saint George
  • Average daylight in December: 11h and 2min

The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 24min).

  • Average sunshine in December: 7h

The months with the most sunshine are January, February, March, April, May and August (Average sunshine: 8h).
The months with the least sunshine are June, July, September, October, November and December (Average sunshine: 7h).

Average UV index in December
Saint George's, Grenada

Average UV index in December - Saint George
  • Average UV index in December: 9

The months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).

Saint George's, Grenada

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