December weather forecast
Vega Baja, PR

Weather in December

December, the first month of the winter in Vega Baja, is still a warm month, with an average temperature ranging between min 75.2°F (24°C) and max 81.3°F (27.4°C).

Temperature

In December, the average high-temperature is practically the same as in November - a still warm 81.3°F (27.4°C). In December, in Vega Baja, the average low-temperature is 75.2°F (24°C).

Heat index

The average heat index in December is estimated at a tropical 86°F (30°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like activity, metabolic differences, wind, and clothing affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In December, the average relative humidity is 78%.

Rainfall

In Vega Baja, during December, the rain falls for 14.4 days and regularly aggregates up to 1.38" (35mm) of precipitation. Throughout the year, in Vega Baja, there are 213.7 rainfall days, and 28.66" (728mm) of precipitation is accumulated.

Daylight

With an average of 11h and 3min of daylight, December has the shortest days of the year in Vega Baja.
On the first day of December in Vega Baja, Puerto Rico, 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 5:59 pm AST.

Sunshine

In December, the average sunshine is 6.9h.

UV index

The months with the lowest UV index in Vega Baja, Puerto Rico, are January through March and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.
Note: In December, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in December in Vega Baja?

In Vega Baja, Puerto Rico, in December, the average high-temperature is 81.3°F (27.4°C), and the average low-temperature is 75.2°F (24°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in December is estimated at 86°F (30°C).

What is the average humidity in December in Vega Baja?

The average relative humidity in December is 78%.

How many days does it rain in December in Vega Baja?

In December, in Vega Baja, Puerto Rico, the rain falls for 14.4 days. Throughout December, 1.38" (35mm) of precipitation is accumulated.

What is the month with the shortest days in Vega Baja?

December has the shortest days of the year in Vega Baja, Puerto Rico, with an average of 11h and 3min of daylight.

What is the average length of the day in December in Vega Baja?

In Vega Baja, Puerto Rico, the average day length in December is 11h and 3min.

When are sunrise and sunset in December in Vega Baja?

On the first day of December in Vega Baja, 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 5:59 pm AST.

How long on average sun shines in December in Vega Baja?

The average sunshine duration in December is 6.9h.

What is the month with the lowest UV index in Vega Baja?

January through March and December, with an average maximum UV index of 6, are months with the lowest UV index.

How high is the UV index in December in Vega Baja?

In Vega Baja, Puerto Rico, the average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Vega Baja, PR

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).

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Average pressure in December
Vega Baja, PR

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).

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Average wind speed in December
Vega Baja, PR

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).

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Average humidity in December
Vega Baja, PR

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%).

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Average rainfall in December
Vega Baja, PR

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").

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Average rainfall days in December
Vega Baja, PR

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).

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Average daylight in December /
Average sunshine in December
Vega Baja, PR

Average daylight in December / Average sunshine in December - Vega Baja, PR
  • Average daylight in December: 11h and 3min

The month with the longest days is June (Average daylight: 13h and 13min).
The month with the shortest days is December (Average daylight: 11h and 3min).

  • 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).

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Average sunshine days in December
Vega Baja, PR

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).

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Average UV index in December
Vega Baja, PR

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).

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Average cloud cover in December
Vega Baja, PR

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).

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Average visibility in December
Vega Baja, PR

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).

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