December weather forecast
Morne Rouge, Grenada

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Weather in December

Morne Rouge, Grenada’s December weather sees rainfall decrease moderately to 138mm (5.43"), concluding the year on a less wet note than most preceding months. The daylight availability shrinks further to approximately 11.4 hours, perfectly balancing day and night durations. The UV index draws back to 9, providing a slight sunburn risk reduction. The sea continues to maintain its warmth, making maritime recreation viable. Thus, the year terminates maintaining the tropical temperature pattern undeterred.

Temperature

Temperatures reach their minimum during January through March and December, recording an average high-temperature of 29°C (84.2°F).

Rainfall

In Morne Rouge, in December, during 18 rainfall days, 138mm (5.43") of precipitation is typically accumulated. In Morne Rouge, during the entire year, the rain falls for 180 days and collects up to 1594mm (62.76") of precipitation.

Sea temperature

January through April and December, with an average sea temperature of 27°C (80.6°F), are months with the coldest seawater.
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are regarded as highly pleasant, making all water activities enjoyable without any discomfort over 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 December, 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.

Sunshine

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

UV index

December is the month with the lowest UV index, with an average maximum UV index of 9. A UV Index of 8 to 10 symbolizes a very high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In December, a regular UV index of 9 translates into these guidelines:
With the absence of protection, damage to skin and eyes can occur instantly. Ensure precautions are taken. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Apply and frequently reapply a broad-spectrum SPF 30+ sunscreen after every two hours, or immediately after a swim or outdoor exercise. Attention! UV radiation is ramped up when reflecting off sand and water surfaces.

Frequently asked questions

What is the coldest month in Morne Rouge?

Morne Rouge sees its lowest temperatures during January through March and December, with an average high-temperature of 29°C (84.2°F).

How hot is December?

During December, Morne Rouge experiences an average high-temperature of 29°C (84.2°F) and a low-temperature of 21°C (69.8°F).

How much does it rain in December?

In December, the rain falls for 18 days. Throughout December, 138mm (5.43") of precipitation is accumulated.

What months are the sea coldest?

January through April and December, with an average sea temperature of 27°C (80.6°F), are months with the coldest seawater.

What is the water temperature in December?

In December, the average sea temperature is 27°C (80.6°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?

With an average of 11h and 24min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

In Morne Rouge, the average day length in December is 11h and 26min.

What time are sunrise and sunset in December?

On the first day of December, 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 is the month with the least sunshine?

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

How long on average sun shines in December?

The average sunshine duration in December is 7h.

When is the lowest UV index?

With an average maximum UV index of 9, December is the month with the lowest UV index.

What is the UV index intensity in December?

The average daily maximum UV index in December is 9. A UV Index of 8 to 10 symbolizes a very high health threat from exposure to the Sun's UV radiation.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in December
Morne Rouge, Grenada

Average temperature in December - Morne Rouge, Grenada
  • Average high temperature in December: 29°C

The warmest months (with the highest average high temperature) are April, May, June, July, August, September, October and November (30°C).
The months with the lowest average high temperature are January, February, March and December (29°C).

  • Average low temperature in December: 21°C

The months with the highest average low temperature are May, June, July, August, September and October (23°C).
The coldest months (with the lowest average low temperature) are January, February, March and December (21°C).

Average rainfall in December
Morne Rouge, Grenada

Average rainfall in December - Morne Rouge, Grenada
  • Average rainfall in December: 138mm

The wettest month (with the highest rainfall) is October (207mm).
The driest month (with the least rainfall) is February (57mm).

Average rainfall days in December
Morne Rouge, Grenada

Average rainfall days in December - Morne Rouge, Grenada
  • 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
Morne Rouge, Grenada

Average sea temperature in December - Morne Rouge, Grenada
  • Average sea temperature in December: 27°C

The best months for swimming (with the highest average sea temperature) are September and October (29°C).
The coldest months (with the lowest average sea temperature) are January, February, March, April and December (27°C).

Average daylight in December /
Average sunshine in December
Morne Rouge, Grenada

Average daylight in December / Average sunshine in December - Morne Rouge, Grenada
  • 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
Morne Rouge, Grenada

Average UV index in December - Morne Rouge, Grenada
  • 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).

Morne Rouge, Grenada

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