Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December's beginning signals an average high-temperature of a still warm 81.3°F (27.4°C), barely different from November's 82.6°F (28.1°C). In December, Frederiksted experiences a marginal drop in temperature, with averages of 79.3°F (26.3°C) at night.Heat index
December's mean heat index is calculated to be a hot 86°F (30°C). Exhaustion might be the outcome of enduring exposure and continuous activity, with a risk of heat cramps.Heat index details are generally centered around shaded locations and a mild breeze. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
January through March and December, with an average relative humidity of 75%, are the least humid months.Rainfall
In Frederiksted, United States Virgin Islands, in December, during 22.7 rainfall days, 1.97" (50mm) of precipitation is typically accumulated. In Frederiksted, during the entire year, the rain falls for 254.5 days and collects up to 29.49" (749mm) of precipitation.Daylight
With an average of 11h and 6min of daylight, December has the shortest days of the year.On the first day of December in Frederiksted, United States Virgin Islands, sunrise is at 6:34 am and sunset at 5:43 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 5:55 pm AST.
Sunshine
The month with the least sunshine is December, with an average of 6.4h of sunshine.UV index
The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 7 suggests these recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the least humid month?
What is the average humidity in December?
How many days does it rain in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Frederiksted have in December?
What are the months with the highest UV index?
When is the lowest UV index in Frederiksted?
How high is the UV index in December?
Average temperature in December
Frederiksted, VI
- Average high temperature in December: 81.3°F
The warmest months (with the highest average high temperature) are September and October (84.2°F).
The month with the lowest average high temperature is March (78.8°F).
- Average low temperature in December: 79.3°F
The month with the highest average low temperature is October (82.2°F).
The coldest month (with the lowest average low temperature) is March (76.6°F).
Average pressure in December
Frederiksted, VI
- Average pressure in December: 29.97"Hg
The months with the highest atmospheric pressure are January, February and June (30.01"Hg).
The months with the lowest atmospheric pressure are October and November (29.9"Hg).
Average wind speed in December
Frederiksted, VI
- Average wind speed in December: 14.4mph
The windiest month (with the highest average wind speed) is July (14.7mph).
The calmest month (with the lowest average wind speed) is October (11mph).
Average humidity in December
Frederiksted, 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 and December (75%).
Average rainfall in December
Frederiksted, VI
- Average rainfall in December: 1.97"
The wettest month (with the highest rainfall) is August (4.17").
The driest month (with the least rainfall) is February (1.18").
Average rainfall days in December
Frederiksted, VI
- Average rainfall days in December: 22.7 days
The month with the highest number of rainy days is August (24.7 days).
The month with the least rainy days is February (16.7 days).
Average daylight in December /
Average sunshine in December
Frederiksted, 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 2min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in December
Frederiksted, VI
- Average sunshine days in December: 4.3 days
The month with the most sunshine days is March (7.6 days).
The month with the least sunshine days is August (1.8 days).
Average UV index in December
Frederiksted, 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
Frederiksted, 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
Frederiksted, 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).
Frederiksted, United States Virgin Islands, USA
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