December weather forecast and climate
Grand Anse Beach, Saint Lucia

Weather in December

The first month of the winter, December, is also a moderately hot month in Grand Anse Beach, Saint Lucia, with temperature in the range of an average low of 23°C (73.4°F) and an average high of 29°C (84.2°F).

Temperature

In Grand Anse Beach, Saint Lucia, the average high-temperature remains the same as in November - a still warm 29°C (84.2°F). In December, the average low-temperature is 23°C (73.4°F).

Rainfall

In Grand Anse Beach, it is raining for 18 days, with typically 149mm (5.87") of accumulated precipitation. In Grand Anse Beach, during the entire year, the rain falls for 209 days and collects up to 2035mm (80.12") of precipitation.

Sea temperature

In December, the average sea temperature is 27°C (80.6°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

December has the shortest days of the year, with an average of 11.3h of daylight.

Sunshine

Months with the most sunshine in Grand Anse Beach, Saint Lucia, are January through September, November and December, with an average of 8h of sunshine.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 8 interpret into the following advice:
Take extra precautions. Protection against sun damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

How much does it rain in Grand Anse Beach in December?

In Grand Anse Beach, Saint Lucia, during December, the rain falls for 18 days and regularly aggregates up to 149mm (5.87") of precipitation.

How warm is the water in December in Grand Anse Beach?

In Grand Anse Beach, Saint Lucia, the average seawater temperature in December is 27°C (80.6°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the month with the shortest days in Grand Anse Beach?

December has the shortest days of the year, with an average of 11.3h of daylight.

What is the average length of the day in December in Grand Anse Beach?

In Grand Anse Beach, the average length of the day in December is 11.3h.

What are the months with the most sunshine in Grand Anse Beach?

January through September, November and December, with an average of 8h of sunshine, are months with the most sunshine.

How long on average sun shines in December in Grand Anse Beach?

In December, the average sunshine in Grand Anse Beach, Saint Lucia, is 8h.

What is the month with the lowest UV index in Grand Anse Beach?

December is the month with the lowest UV index in Grand Anse Beach, Saint Lucia, with an average maximum UV index of 8.

What is the UV index reading in December in Grand Anse Beach?

In Grand Anse Beach, Saint Lucia, the average daily maximum UV index in December is 8. A UV Index reading of 8 to 10 represents a very high health threat from unsafe exposure to the Sun's UV rays.

Average temperature in December
Grand Anse Beach, Saint Lucia

Average temperature in December - Grand Anse Beach, Saint Lucia
  • Average high temperature in December: 29°C

The warmest months (with the highest average high temperature) are May, June, July, August, September and October (30°C).
Months with the lowest average high temperature are January and February (28°C).

  • Average low temperature in December: 23°C

The month with the highest average low temperature is July (25°C).
The coldest months (with the lowest average low temperature) are January, February and March (22°C).

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Average rainfall in December
Grand Anse Beach, Saint Lucia

Average rainfall in December - Grand Anse Beach, Saint Lucia
  • Average rainfall in December: 149mm

The wettest month (with the highest rainfall) is October (269mm).
The driest month (with the least rainfall) is March (76mm).

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Average rainfall days in December
Grand Anse Beach, Saint Lucia

Average rainfall days in December - Grand Anse Beach, Saint Lucia
  • Average rainfall days in December: 18 days

The month with the highest number of rainy days is September (25 days).
The month with the least rainy days is April (11 days).

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Average sea temperature in December
Grand Anse Beach, Saint Lucia

Average sea temperature in December - Grand Anse Beach, Saint Lucia
  • 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 February and March (26°C).

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Average daylight in December /
Average sunshine in December
Grand Anse Beach, Saint Lucia

Average daylight in December / Average sunshine in December - Grand Anse Beach, Saint Lucia
  • Average daylight in December: 11.3h

Months with the longest days are June and July (Average daylight: 12.9h).
The month with the shortest days is December (Average daylight: 11.3h).

  • Average sunshine in December: 8h

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

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Average UV index in December
Grand Anse Beach, Saint Lucia

Average UV index in December - Grand Anse Beach, Saint Lucia
  • Average UV index in December: 8

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 8).

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