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 sea temperature 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
Barceloneta signifies an average high-temperature of a still moderately hot 81.3°F (27.4°C) in December, closely mirroring the 82.8°F (28.2°C) of November. Nighttime in Barceloneta, Puerto Rico, during December, brings an average low of 75.2°F (24°C), a modest reduction from the day's peak.Heat index
December's average heat index is evaluated at a hot 86°F (30°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.In the scope of the heat index, its values resonate with shade and light wind conditions. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', blends air temperature and moisture content to represent the felt temperature to humans. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important 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
The average relative humidity in December is 78%.Rainfall
In Barceloneta, in December, during 14.4 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. Throughout the year, there are 213.7 rainfall days, and 28.66" (728mm) of precipitation is accumulated.Ocean temperature
In Barceloneta, the average seawater temperature in December is 81.9°F (27.7°C).Note: For any water activity, having surface water temperatures from 77°F (25°C) to 84.2°F (29°C) is considered outstanding and highly delightful for lengthened periods.
Daylight
The month with the shortest days is December, with an average of 11h and 0min of daylight.On the first day of December, sunrise is at 6:42 am and sunset at 5:48 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:00 pm AST.
Sunshine
In December, the average sunshine is 6.9h.UV index
The months with the lowest UV index are January through March and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.Note: The UV index of 6 during December translates into the following guidance:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Stay cautious! Sand and water reflections increase UV radiation potency.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the average humidity in December?
How many days does it rain in December?
How warm is the water in December?
What is the month with the shortest days?
How many hours of daylight does Barceloneta have in December?
When is the sunrise / sunset in December?
How long on average sun shines in December in Barceloneta?
What is the month with the lowest UV index?
What is the UV index intensity in December in Barceloneta?
Average temperature in December
Barceloneta, PR
- Average high temperature in December: 81.3°F
The warmest month (with the highest average high temperature) is August (85.6°F).
The month with the lowest average high temperature is March (80.2°F).
- Average low temperature in December: 75.2°F
The month with the highest average low temperature is August (78.4°F).
The coldest month (with the lowest average low temperature) is March (72.5°F).
Average pressure in December
Barceloneta, PR
- Average pressure in December: 29.98"Hg
The month with the highest atmospheric pressure is January (30.02"Hg).
The month with the lowest atmospheric pressure is October (29.9"Hg).
Average wind speed in December
Barceloneta, PR
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is July (9.9mph).
The calmest month (with the lowest average wind speed) is October (6.8mph).
Average humidity in December
Barceloneta, PR
- Average humidity in December: 78%
The months with the highest relative humidity are May, June, July, October and November (79%).
The months with the lowest relative humidity are February, March and April (77%).
Average rainfall in December
Barceloneta, PR
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is February (0.91").
Average rainfall days in December
Barceloneta, PR
- Average rainfall days in December: 14.4 days
The month with the highest number of rainy days is May (22.9 days).
The month with the least rainy days is January (13.3 days).
Average sea temperature in December
Barceloneta, PR
- Average sea temperature in December: 81.9°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 (79.1°F).
Average daylight in December /
Average sunshine in December
Barceloneta, PR
- Average daylight in December: 11h and 0min
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 0min).
- Average sunshine in December: 6h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is November (Average sunshine: 6h and 48min).
Average sunshine days in December
Barceloneta, PR
- Average sunshine days in December: 11.5 days
The month with the most sunshine days is January (12.3 days).
The month with the least sunshine days is May (5.9 days).
Average UV index in December
Barceloneta, PR
- Average UV index in December: 6
The months with the highest UV index are April, May, June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March and December (UV index 6).
Average cloud cover in December
Barceloneta, PR
- Average cloud cover in December: 31
The month with the most cloud cover is May (Cloud cover 34).
The month with the least cloud cover is September (Cloud cover 25).
Average visibility in December
Barceloneta, PR
- 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).
Barceloneta, Puerto Rico, USA
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