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
Vega Alta's entry into December measures an average high-temperature of a still warm 81°F (27.2°C), closely parallel to the preceding month. Vega Alta's nighttime temperature in December shows a minor descent, with a steady average of 75.2°F (24°C).Heat index
The heat index value for December is estimated at a tropical 86°F (30°C). Enduring exposure and ongoing activity could cause a sense of fatigue and subsequent heat cramps.Consider that heat index readings are for situations in the shade and light wind. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', quantifies the warmth felt when relative humidity is considered. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Humidity
The average relative humidity in December in Vega Alta is 78%.Rainfall
In December, the rain falls for 17.5 days. Throughout December, 1.61" (41mm) of precipitation is accumulated. In Vega Alta, during the entire year, the rain falls for 223.5 days and collects up to 27.95" (710mm) of precipitation.Daylight
With an average of 11h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:41 am and sunset at 5:47 pm. On the last day of December, in Vega Alta, sunrise is at 6:57 am and sunset at 6:00 pm AST.
Sunshine
In December, the average sunshine is 6.8h.UV index
January through April and December, with an average maximum UV index of 6, are months with the lowest UV index in Vega Alta. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: An average UV index of 6 in December transforms into this advice:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
What is the usual temperature for Vega Alta in December?
What is the average humidity in December in Vega Alta?
How many days does it rain in December in Vega Alta?
What is the month with the shortest days in Vega Alta?
How many hours of daylight does Vega Alta have in December?
What time are sunrise and sunset in December in Vega Alta?
How many hours of sunshine does Vega Alta have in December?
What are the months with the lowest UV index in Vega Alta?
What is the UV index reading in December in Vega Alta?
Average temperature in December
Vega Alta, PR
- Average high temperature in December: 81°F
The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is January (79.9°F).
- Average low temperature in December: 75.2°F
The months with the highest average low temperature are August, September and October (78.4°F).
The coldest month (with the lowest average low temperature) is March (73°F).
Average pressure in December
Vega Alta, PR
- Average pressure in December: 29.98"Hg
The months with the highest atmospheric pressure are January and February (30.02"Hg).
The month with the lowest atmospheric pressure is October (29.9"Hg).
Average wind speed in December
Vega Alta, PR
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is July (10mph).
The calmest month (with the lowest average wind speed) is October (6.8mph).
Average humidity in December
Vega Alta, PR
- Average humidity in December: 78%
The months with the highest relative humidity are May, June, July and November (79%).
The month with the lowest relative humidity is March (76%).
Average rainfall in December
Vega Alta, PR
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is October (3.82").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days in December
Vega Alta, PR
- Average rainfall days in December: 17.5 days
The month with the highest number of rainy days is October (24 days).
The months with the least rainy days are January and February (14.2 days).
Average daylight in December /
Average sunshine in December
Vega Alta, 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 months with the most sunshine are May and June (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).
Average sunshine days in December
Vega Alta, PR
- Average sunshine days in December: 7.5 days
The month with the most sunshine days is January (9.8 days).
The months with the least sunshine days are October and November (3.5 days).
Average UV index in December
Vega Alta, PR
- Average UV index in December: 6
The months with the highest UV index are May, June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April and December (UV index 6).
Average cloud cover in December
Vega Alta, PR
- Average cloud cover in December: 33
The months with the most cloud cover are May, July and November (Cloud cover 34).
The month with the least cloud cover is September (Cloud cover 26).
Average visibility in December
Vega Alta, 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).
Vega Alta, Puerto Rico, USA
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