Jolly Harbour
Antigua and Barbuda
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Jolly Harbour, Antigua and Barbuda

December, the first month of the winter, in Jolly Harbour, is also a moderately hot month, 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 December, the average high-temperature is essentially the same as in November - a warm 29°C (84.2°F). In December, in Jolly Harbour, the average low-temperature is 23°C (73.4°F).

Rainfall

In Jolly Harbour, Antigua and Barbuda, during December, the rain falls for 17 days and regularly aggregates up to 88mm (3.46") of precipitation. Throughout the year, there are 180 rainfall days, and 1040mm (40.94") of precipitation is accumulated.

Sea temperature

In Jolly Harbour, the average seawater temperature in December is 27°C (80.6°F).
Note: 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.

Daylight

The month with the shortest days in Jolly Harbour is December, with an average of 11.1h of daylight.

Sunshine

September through December, with an average of 7h of sunshine, are months with the least sunshine in Jolly Harbour.

UV index

Months with the lowest UV index are January and December, with an average maximum UV index of 8. A UV Index reading of 8 to 10 represents a very high health hazard from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 8 transform into the following instructions:
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. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in December in Jolly Harbour?

The average high-temperature, in December, in Jolly Harbour, Antigua and Barbuda, is 29°C (84.2°F), while the average low-temperature is 23°C (73.4°F).

How much does it rain in Jolly Harbour in December?

In Jolly Harbour, in December, it is raining for 17 days, with typically 88mm (3.46") of accumulated precipitation.

What is the water temperature in December in Jolly Harbour?

In December, the average sea temperature in Jolly Harbour 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 in Jolly Harbour?

The month with the shortest days in Jolly Harbour is December, with an average of 11.1h of daylight.

How many hours of daylight does Jolly Harbour have in December?

In Jolly Harbour, Antigua and Barbuda, the average length of the day in December is 11.1h.

What is the month with the least sunshine in Jolly Harbour?

Months with the least sunshine in Jolly Harbour, Antigua and Barbuda, are September through December, with an average of 7h of sunshine.

How many hours of sunshine does Jolly Harbour have in December?

In Jolly Harbour, the average sunshine in December is 7h.

What are the months with the lowest UV index in Jolly Harbour?

January and December, with an average maximum UV index of 8, are months with the lowest UV index in Jolly Harbour, Antigua and Barbuda.

How high is the UV index in December in Jolly Harbour?

In December, the average daily maximum UV index in Jolly Harbour is 8. A UV Index of 8 to 10 symbolizes a very high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in December - Jolly Harbour, Antigua and Barbuda
  • Average high temperature in December: 29°C

Warmest months (with the highest average high temperature) are July, August and September (31°C).
Months with the lowest average high temperature are January and February (28°C).

  • Average low temperature in December: 23°C

Months with the highest average low temperature are June, July, August and September (25°C).
Coldest months (with the lowest average low temperature) are January, February and March (22°C).

Average rainfall in December - Jolly Harbour, Antigua and Barbuda
  • Average rainfall in December: 88mm

The wettest month (with the highest rainfall) is September (140mm).
The driest month (with the lowest rainfall) is February (37mm).

Average rainfall days in December - Jolly Harbour, Antigua and Barbuda
  • Average rainfall days in December: 17 days

Months with the highest number of rainy days are September, October, November and December (17 days).
The month with the lowest number of rainy days is April (11 days).

Average sea temperature in December - Jolly Harbour, Antigua and Barbuda
  • Average sea temperature in December: 27°C

The best month for swimming (with the highest average sea temperature) is September (29°C).
Coldest months (with the lowest average sea temperature) are January, February, March and April (26°C).

Average daylight in December / Average sunshine in December - Jolly Harbour, Antigua and Barbuda
  • Average daylight in December: 11.1h

The month with the longest days is June (Average daylight: 13.1h).
The month with shortest days is December (Average daylight: 11.1h).

  • Average sunshine in December: 7h

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

Average UV index in December - Jolly Harbour, Antigua and Barbuda
  • Average UV index in December: 8

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