Grand Anse Beach
Saint Lucia
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Grand Anse Beach, Saint Lucia

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 high of 29°C (84.2°F) and an average low of 23°C (73.4°F).

Temperature

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

Rainfall

In Grand Anse Beach, it is raining for 18 days, with typically 149mm (5.9") of accumulated precipitation. Throughout the year, in Grand Anse Beach, there are 209 rainfall days, and 2035mm (80.1") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature in Grand Anse Beach 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.

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

UV index

December is the month with the lowest UV index in Grand Anse Beach, with an average maximum UV index of 8. A UV Index value of 8 to 10 symbolizes a very high threat to health from unsafe exposure to the UV radiation for the ordinary person.
In December, the average maximum UV index of 8 translate into the following recommendations:
Take special precautions, as unprotected skin can be damaged and can burn 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in December in Grand Anse Beach?

In Grand Anse Beach, in December, the average high-temperature is 29°C (84.2°F), and the average low-temperature is 23°C (73.4°F).

How many days does it rain in December in Grand Anse Beach?

In Grand Anse Beach, during December, the rain falls for 18 days and regularly aggregates up to 149mm (5.9") of precipitation.

What is the sea water temperature in December in Grand Anse Beach?

In Grand Anse Beach, Saint Lucia, the average seawater temperature in December is 27°C (80.6°F). 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.

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

With an average of 11.3h of daylight, December has the shortest days of the year in Grand Anse Beach, Saint Lucia.

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

The average length of the day in December is 11.3h.

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

When is the lowest UV index in Grand Anse Beach?

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

What is the UV index intensity 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 of 8 to 10 symbolizes a very high health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in December - Grand Anse Beach, Saint Lucia
  • Average high temperature in December: 29°C

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).
Coldest months (with the lowest average low temperature) are January, February and March (22°C).

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 lowest rainfall) is March (76mm).

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 lowest number of rainy days is April (11 days).

Average sea temperature in December - Grand Anse Beach, Saint Lucia
  • Average sea temperature in December: 27°C

Best months for swimming (with the highest average sea temperature) are September and October (29°C).
Coldest months (with the lowest average sea temperature) are February and March (26°C).

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 shortest days is December (Average daylight: 11.3h).

  • Average sunshine in December: 8h

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

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).