December weather forecast
Charlotte Amalie, VI

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The Charlotte Amalie Harbour within the United States Virgin Islands
The Charlotte Amalie Harbour within the United States Virgin Islands

Weather in December

December in Charlotte Amalie concludes the year on a slightly cool and damp note. The city’s festive spirit is complemented by the recorded average low temperature of 78.4°F (25.8°C). The pace of life subtly slows, matching the rhythm of the ubiquitous rainfall. The diminishing daylight redirects the city hustle, encouraging coziness and indoor activities. Despite the lower temperatures and reduced sunshine, December still holds charm and promises memorable experiences with its unique weather blending.

Temperature

The commencement of December in Charlotte Amalie introduces an average high-temperature of a still moderately hot 80.6°F (27°C), closely mirroring the preceding month. In December, Charlotte Amalie temperatures settle at a low of 78.4°F (25.8°C) during the nights, reflecting a minor change from daytime highs.

Heat index

December's mean heat index is appraised at 84.2°F (29°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

January through March, October through December, with an average relative humidity of 75%, are the least humid months.

Rainfall

In Charlotte Amalie, in December, during 22.6 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. Throughout the year, there are 253.1 rainfall days, and 33.27" (845mm) of precipitation is accumulated.

Ocean temperature

In Charlotte Amalie, in December, the average water temperature is 81.3°F (27.4°C).
Note: Swimming, diving, and other water-related activities in temperatures between 77°F (25°C) and 84.2°F (29°C) are considered highly enjoyable and satisfying for longer durations without uneasiness.

Daylight

December has the shortest days of the year, with an average of 11h and 6min of daylight.
On the first day of December in Charlotte Amalie, sunrise is at 6:35 am and sunset at 5:42 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 5:54 pm AST.

Sunshine

The months with the least sunshine in Charlotte Amalie are November and December, with an average of 6.5h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Charlotte Amalie. The months with the lowest UV index in Charlotte Amalie are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In December, the maximum UV index of 7 suggests this advice:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. 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. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Caution! Sand and water surfaces escalate the UV intensity from the Sun.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in December in Charlotte Amalie?

The high-temperature in Charlotte Amalie, United States Virgin Islands, during December is 80.6°F (27°C) and the low-temperature is 78.4°F (25.8°C). In December, the average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, is appraised at 84.2°F (29°C).

What is the least humid month in Charlotte Amalie?

January through March, October through December, with an average relative humidity of 75%, are the least humid months in Charlotte Amalie.

What is the average humidity in December in Charlotte Amalie?

The average relative humidity in December in Charlotte Amalie, United States Virgin Islands, is 75%.

How much does it rain in Charlotte Amalie in December?

In Charlotte Amalie, in December, during 22.6 rainfall days, 2.05" (52mm) of precipitation is typically accumulated.

What is the water temperature in December in Charlotte Amalie?

In December, the average ocean temperature in Charlotte Amalie, United States Virgin Islands, is 81.3°F (27.4°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) 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 Charlotte Amalie?

The month with the shortest days in Charlotte Amalie is December, with an average of 11h and 6min of daylight.

How many hours of daylight does Charlotte Amalie have in December?

The average day length in December in Charlotte Amalie, United States Virgin Islands, is 11h and 3min.

What time are sunrise and sunset in December in Charlotte Amalie?

On the first day of December, sunrise is at 6:35 am and sunset at 5:42 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 5:54 pm AST.

What is the month with the least sunshine in Charlotte Amalie?

November and December, with an average of 6.5h of sunshine, are months with the least sunshine.

How long on average sun shines in December in Charlotte Amalie?

In December, the average sunshine duration is 6.5h.

What are the months with the highest UV index in Charlotte Amalie?

January through December, with an average maximum UV index of 7, are months with the highest UV index in Charlotte Amalie.

What are the months with the lowest UV index in Charlotte Amalie?

The months with the lowest UV index are January through December, with an average maximum UV index of 7.

What is the UV index reading in December in Charlotte Amalie?

The average daily maximum UV index in December in Charlotte Amalie is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.

Average temperature in December
Charlotte Amalie, VI

Average temperature in December - Charlotte Amalie, VI
  • Average high temperature in December: 80.6°F

The warmest month (with the highest average high temperature) is September (84°F).
The month with the lowest average high temperature is March (78.4°F).

  • Average low temperature in December: 78.4°F

The month with the highest average low temperature is October (81.5°F).
The coldest month (with the lowest average low temperature) is March (75.7°F).

Average pressure in December
Charlotte Amalie, VI

Average pressure in December - Charlotte Amalie, VI
  • Average pressure in December: 29.98"Hg

The months with the highest atmospheric pressure are January and February (30.02"Hg).
The months with the lowest atmospheric pressure are October and November (29.91"Hg).

Average wind speed in December
Charlotte Amalie, VI

Average wind speed in December - Charlotte Amalie, VI
  • Average wind speed in December: 14.7mph

The windiest month (with the highest average wind speed) is July (15mph).
The calmest month (with the lowest average wind speed) is October (11.1mph).

Average humidity in December
Charlotte Amalie, VI

Average humidity in December - Charlotte Amalie, VI
  • Average humidity in December: 75%

The months with the highest relative humidity are May, June, July and August (78%).
The months with the lowest relative humidity are January, February, March, October, November and December (75%).

Average rainfall in December
Charlotte Amalie, VI

Average rainfall in December - Charlotte Amalie, VI
  • Average rainfall in December: 2.05"

The wettest month (with the highest rainfall) is September (4.45").
The driest month (with the least rainfall) is February (1.22").

Average rainfall days in December
Charlotte Amalie, VI

Average rainfall days in December - Charlotte Amalie, VI
  • Average rainfall days in December: 22.6 days

The month with the highest number of rainy days is November (25.5 days).
The months with the least rainy days are February, March and June (18.2 days).

Average sea temperature in December
Charlotte Amalie, VI

Average sea temperature in December - Charlotte Amalie, VI
  • Average sea temperature in December: 81.3°F

The best month for swimming (with the highest average sea temperature) is September (85°F).
The coldest month (with the lowest average sea temperature) is February (78.7°F).

Average daylight in December /
Average sunshine in December
Charlotte Amalie, VI

Average daylight in December / Average sunshine in December - Charlotte Amalie, VI
  • Average daylight in December: 11h and 1min

The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).

  • Average sunshine in December: 6h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are November and December (Average sunshine: 6h and 30min).

Average sunshine days in December
Charlotte Amalie, VI

Average sunshine days in December - Charlotte Amalie, VI
  • Average sunshine days in December: 3.6 days

The months with the most sunshine days are March and April (7.3 days).
The month with the least sunshine days is November (2.4 days).

Average UV index in December
Charlotte Amalie, VI

Average UV index in December - Charlotte Amalie, VI
  • Average UV index in December: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

Average cloud cover in December
Charlotte Amalie, VI

Average cloud cover in December - Charlotte Amalie, VI
  • Average cloud cover in December: 39

The months with the most cloud cover are May and July (Cloud cover 40).
The month with the least cloud cover is February (Cloud cover 33).

Average visibility in December
Charlotte Amalie, VI

Average visibility in December - Charlotte Amalie, VI
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Charlotte Amalie, United States Virgin Islands, USA

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