December weather forecast
Jolly Harbour, Antigua and Barbuda

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Weather in December

December in Jolly Harbour brings with it a festive spirit along with a mild weather pattern. It retains enough daylight to enjoy the outdoors while the evenings become slightly cooler. The end of the year offers a blend of pleasantly warm afternoons and cooler nights. As the year finalizes, the UV index drops to 8, its lowest point of the year, alleviating some of the sun safety concerns. Despite the seasonal transitions, rainfall remains moderately high at 88mm (3.46"), wrapping the year on a wet note.

Temperature

November's transformation into December witnesses an average high-temperature of a moderately hot 29°C (84.2°F), noting a minor change from the preceding month. Throughout the month of December, Jolly Harbour observes an average nighttime temperature of 23°C (73.4°F).

Rainfall

In Jolly Harbour, during December, the rain falls for 17 days and regularly aggregates up to 88mm (3.46") of precipitation. In Jolly Harbour, during the entire year, the rain falls for 180 days and collects up to 1040mm (40.94") of precipitation.

Sea temperature

In Jolly Harbour, the average seawater temperature in December is 27°C (80.6°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.

Daylight

With an average of 11h and 6min of daylight, December has the shortest days of the year in Jolly Harbour.
On the first day of the month, sunrise is at 06:21 and sunset at 17:32. On the last day of December, in Jolly Harbour, sunrise is at 06:36 and sunset at 17:44 AST.

Sunshine

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

UV index

The months with the lowest UV index in Jolly Harbour are January and December, with an average maximum UV index of 8. A UV Index estimate of 8 to 10 represents a very high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 8 translates into the following recommendations:
Take all necessary measures. Eyes and skin are at risk if left unprotected. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Stay aware! UV radiation is magnified when reflecting off sand and water.
Updated: Jan 24, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

How hot is it in Jolly Harbour in December?

In Jolly Harbour, 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 Jolly Harbour in December?

In December, the rain falls for 17 days. Throughout December, 88mm (3.46") of precipitation is accumulated.

How warm is the water in December in Jolly Harbour?

In December, the average sea temperature 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 Jolly Harbour?

December has the shortest days of the year, with an average of 11h and 6min of daylight.

What is the average length of the day in December in Jolly Harbour?

In Jolly Harbour, the average day length in December is 11h and 8min.

What time are sunrise and sunset in December in Jolly Harbour?

On the first day of December, sunrise is at 06:21 and sunset at 17:32. On the last day of the month, sunrise is at 06:36 and sunset at 17:44 AST.

What are the months with the least sunshine in Jolly Harbour?

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

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

The average sunshine duration in December in Jolly Harbour is 7h.

What is the month with the lowest UV index in Jolly Harbour?

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

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

In Jolly Harbour, the average daily maximum UV index in December is 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unprotected exposure to UV radiation.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in December
Jolly Harbour, Antigua and Barbuda

Average temperature in December - Jolly Harbour, Antigua and Barbuda
  • Average high temperature in December: 29°C

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

  • Average low temperature in December: 23°C

The months with the highest average low temperature are June, July, August and September (25°C).
The 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 - 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 least rainfall) is February (37mm).

Average rainfall days in December
Jolly Harbour, Antigua and Barbuda

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

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

Average sea temperature in December
Jolly Harbour, Antigua and Barbuda

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).
The 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 / Average sunshine in December - Jolly Harbour, Antigua and Barbuda
  • Average daylight in December: 11h and 1min

The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 6min).

  • Average sunshine in December: 7h

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

Average UV index in December
Jolly Harbour, Antigua and Barbuda

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

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

Jolly Harbour, Antigua and Barbuda

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