December weather forecastVega Baja, PR
December
Weather in December
December marks the low point in Vega Baja's annual temperature cycle. The city experiences its coldest temperature of the year, dropping to 81.3°F (27.4°C) during the day and 75.2°F (24°C) at night. With a wind speed of 9.3mph (15km/h), the chill factor considerably increases. Despite the overall lower temperatures, December presents a comfortable and festive atmosphere, making it a perfect time for holiday celebrations. As the month concludes, Vega Baja awaits another cycle of diverse weather patterns in the new year.Temperature
As November transitions into December, Vega Baja records an average high-temperature of a still warm 81.3°F (27.4°C), showing a gentle shift from the preceding month. Vega Baja maintains a near steady average temperature of 75.2°F (24°C) during the nights of December, demonstrating little drop from daytime highs.Heat index
During December, the heat index is calculated to be a hot 86°F (30°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', comes about by integrating the temperature readings with the humidity levels. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. 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 highly critical for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Humidity
In December, the average relative humidity is 78%.Rainfall
In Vega Baja, in December, during 14.4 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. In Vega Baja, during the entire year, the rain falls for 213.7 days and collects up to 28.66" (728mm) of precipitation.Daylight
December has the shortest days of the year, with an average of 11h and 0min of daylight.On the first day of December, sunrise is at 6:41 am and sunset at 5:47 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:00 pm AST.
Sunshine
In Vega Baja, the average sunshine in December is 6.9h.UV index
January through March and December, with an average maximum UV index of 6, are months with the lowest UV index in Vega Baja. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 6 translates into these guidelines:
Resist overexposure. Safeguarding from solar damage is indispensable. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Vega Baja, 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
Vega Baja, 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
Vega Baja, 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
Vega Baja, 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
Vega Baja, 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
Vega Baja, 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 daylight in December /
Average sunshine in December
Vega Baja, 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 54min
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
Vega Baja, 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
Vega Baja, 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
Vega Baja, 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
Vega Baja, 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).
