December weather forecast and climate
Gros Islet, Saint Lucia

Weather in December

The first month of the winter, December, is still a warm month in Gros Islet, 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 December, the average high-temperature remains equal 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 Gros Islet, in December, during 18 rainfall days, 149mm (5.87") of precipitation is typically accumulated. Throughout the year, in Gros Islet, there are 209 rainfall days, and 2035mm (80.12") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature is 27.8°C (82°F).
Note: 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.

Daylight

With an average of 11.3h of daylight, December has the shortest days of the year in Gros Islet.

Sunshine

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

UV index

December is the month with the lowest UV index, with an average maximum UV index of 8. A UV Index value of 8 to 10 symbolizes a very high health risk from unprotected exposure to the Sun's UV rays for the average person.
Note: In December, the average maximum UV index of 8 translate into the following recommendations:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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

What is the temperature in December in Gros Islet?

In Gros Islet, Saint Lucia, in December, the average high-temperature is 29°C (84.2°F), and the average low-temperature is 23°C (73.4°F).

How much does it rain in Gros Islet in December?

In Gros Islet, in December, it is raining for 18 days, with typically 149mm (5.87") of accumulated precipitation.

What is the sea water temperature in December in Gros Islet?

In Gros Islet, Saint Lucia, in December, the average water temperature is 27.8°C (82°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 Gros Islet?

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

What is the average length of the day in December in Gros Islet?

In Gros Islet, Saint Lucia, the average length of the day in December is 11.3h.

What are the months with the most sunshine in Gros Islet?

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

How long on average sun shines in December in Gros Islet?

In Gros Islet, the average sunshine in December is 8h.

What is the month with the lowest UV index in Gros Islet?

With an average maximum UV index of 8, December is the month with the lowest UV index in Gros Islet, Saint Lucia.

What is the UV index reading in December in Gros Islet?

The average daily maximum UV index in December in Gros Islet, Saint Lucia, is 8. A UV Index estimate of 8 to 10 represents a very high hazard to health from the exposure to the Sun's UV rays.

Average temperature in December
Gros Islet, Saint Lucia

Average temperature in December - Gros Islet, 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
Gros Islet, Saint Lucia

Average rainfall in December - Gros Islet, 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
Gros Islet, Saint Lucia

Average rainfall days in December - Gros Islet, 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
Gros Islet, Saint Lucia

Average sea temperature in December - Gros Islet, Saint Lucia
  • Average sea temperature in December: 27.8°C

The best month for swimming (with the highest average sea temperature) is September (29.4°C).
The coldest month (with the lowest average sea temperature) is March (27°C).

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Average daylight in December /
Average sunshine in December
Gros Islet, Saint Lucia

Average daylight in December / Average sunshine in December - Gros Islet, Saint Lucia
  • Average daylight in December: 11.3h

The month with the longest days is June (Average daylight: 13h).
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
Gros Islet, Saint Lucia

Average UV index in December - Gros Islet, 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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