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
The average high-temperature for December is a still warm 82.8°F (28.2°C), closely aligning with the temperature of the preceding month. During the nights of December, Cabo Rojo maintains an almost steady temperature with an average low of 75°F (23.9°C).Heat index
For December, the heat index is calculated to be a tropical 89.6°F (32°C). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.Always consider that heat index estimations are for light winds and places in the shade. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Humidity
The average relative humidity in December is 76%.Rainfall
In December, the rain falls for 15.6 days. Throughout December, 1.26" (32mm) of precipitation is accumulated. Throughout the year, there are 235 rainfall days, and 25.55" (649mm) 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 6:44 am and sunset at 5:51 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:03 pm AST.
Sunshine
In Cabo Rojo, the average sunshine in December is 7.7h.UV index
The months with the lowest UV index in Cabo Rojo are January, February 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 average individuals.Note: The maximum daily UV index of 6 in December interprets into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. 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. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in December?
What is the average humidity in December?
How much does it rain in December?
What is the month with the shortest days?
How many hours of daylight does Cabo Rojo have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Cabo Rojo, PR
- Average high temperature in December: 82.8°F
The warmest month (with the highest average high temperature) is August (85.8°F).
The month with the lowest average high temperature is January (81.3°F).
- Average low temperature in December: 75°F
The months with the highest average low temperature are July and August (78.8°F).
The coldest month (with the lowest average low temperature) is February (73.4°F).
Average pressure in December
Cabo Rojo, PR
- Average pressure in December: 29.97"Hg
The months with the highest atmospheric pressure are January and February (30.01"Hg).
The month with the lowest atmospheric pressure is October (29.89"Hg).
Average wind speed in December
Cabo Rojo, PR
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is July (8.7mph).
The calmest months (with the lowest average wind speed) are October and November (7mph).
Average humidity in December
Cabo Rojo, PR
- Average humidity in December: 76%
The month with the highest relative humidity is November (78%).
The month with the lowest relative humidity is March (74%).
Average rainfall in December
Cabo Rojo, PR
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is September (3.58").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in December
Cabo Rojo, PR
- Average rainfall days in December: 15.6 days
The month with the highest number of rainy days is May (24.3 days).
The month with the least rainy days is January (13.5 days).
Average daylight in December /
Average sunshine in December
Cabo Rojo, 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 4min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is November (Average sunshine: 7h and 6min).
Average sunshine days in December
Cabo Rojo, PR
- Average sunshine days in December: 11.4 days
The month with the most sunshine days is January (13.5 days).
The month with the least sunshine days is May (4.7 days).
Average UV index in December
Cabo Rojo, PR
- Average UV index in December: 6
The months with the highest UV index are March, April, May, June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February and December (UV index 6).
Average cloud cover in December
Cabo Rojo, PR
- Average cloud cover in December: 20
The month with the most cloud cover is May (Cloud cover 28).
The months with the least cloud cover are January, February and December (Cloud cover 20).
Average visibility in December
Cabo Rojo, 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).
Cabo Rojo, Puerto Rico, USA
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