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
Entering December, Jayuya's average high-temperature reads a still warm 82°F (27.8°C), indicating a close resemblance to the previous month's climate. Throughout the month of December, the nighttime temperature dips to an average of 72.7°F (22.6°C).Heat index
In December, the average heat index is estimated at a hot 87.8°F (31°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.Remember that heat index calculations are made for conditions in the shade with light wind. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', measures the perceived warmth when incorporating the humidity present in the air. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are especially vital to children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Humidity
In December, the average relative humidity is 79%.Rainfall
In Jayuya, during December, the rain falls for 18.6 days and regularly aggregates up to 1.42" (36mm) of precipitation. Throughout the year, there are 249.1 rainfall days, and 28.82" (732mm) of precipitation is accumulated.Daylight
December has the shortest days of the year, with an average of 11h and 6min of daylight.On the first day of December, sunrise is at 6:42 am and sunset at 5:49 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:01 pm AST.
Sunshine
In December, the average sunshine is 7h.UV index
January through April, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 6 during December translates into the following guidance:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Stay sun-safe with clothing that is both closely woven and worn loosely.
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 much does it rain in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December in Jayuya?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Jayuya, PR
- Average high temperature in December: 82°F
The warmest month (with the highest average high temperature) is August (86.5°F).
The month with the lowest average high temperature is January (81°F).
- Average low temperature in December: 72.7°F
The month with the highest average low temperature is August (76.6°F).
The coldest months (with the lowest average low temperature) are February and March (70.9°F).
Average pressure in December
Jayuya, PR
- Average pressure in December: 29.98"Hg
The months with the highest atmospheric pressure are January and February (30.01"Hg).
The months with the lowest atmospheric pressure are October and November (29.9"Hg).
Average wind speed in December
Jayuya, PR
- Average wind speed in December: 6.6mph
The windiest month (with the highest average wind speed) is July (8mph).
The calmest month (with the lowest average wind speed) is November (5.5mph).
Average humidity in December
Jayuya, PR
- Average humidity in December: 79%
The month with the highest relative humidity is November (81%).
The month with the lowest relative humidity is March (76%).
Average rainfall in December
Jayuya, PR
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is September (4.45").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days in December
Jayuya, PR
- Average rainfall days in December: 18.6 days
The month with the highest number of rainy days is October (24.8 days).
The month with the least rainy days is February (15 days).
Average daylight in December /
Average sunshine in December
Jayuya, PR
- 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: 7h and 0min
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 54min).
Average sunshine days in December
Jayuya, PR
- Average sunshine days in December: 7 days
The month with the most sunshine days is March (7.6 days).
The month with the least sunshine days is October (2.6 days).
Average UV index in December
Jayuya, PR
- Average UV index in December: 6
The months with the highest UV index are May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, November and December (UV index 6).
Average cloud cover in December
Jayuya, PR
- Average cloud cover in December: 28
The month with the most cloud cover is May (Cloud cover 34).
The month with the least cloud cover is February (Cloud cover 25).
Average visibility in December
Jayuya, 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).
Jayuya, Puerto Rico, USA
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