December weather forecast
Jayuya, PR

Welcoming the joy of the festive season, December in Jayuya offers a milder atmosphere than the preceding November. A decrease in temperature establishes 82°F (27.8°C) as the new high while rainfall drops significantly compared to November, amounting to approximately 1.42in. Cloud cover is marginally higher than the previous month, placing a slight curb on duration of sunshine. The winds show mild intensity, blowing at an average of 6.6mph (10.6km/h), adding to the fresh winter feel. Even though daylight is relatively short compared to other months, there's plenty of sunshine to bask under and explore the city's winter festivities.

Temperature

The beginning of December reveals an average high-temperature of a still moderately hot 82°F (27.8°C), showing minimal deviation from the previous month. Jayuya cools down to an average low-temperature of 72.7°F (22.6°C) throughout the month of December.

Heat index

In December, the average heat index is calculated to be a tropical 87.8°F (31°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
Heat index details are generally centered around shaded locations and a mild breeze. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', reflects the feeling of heat when considering both air temperature and humidity. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.

Humidity

In December, the average relative humidity in Jayuya, Puerto Rico, is 79%.

Rainfall

In Jayuya, during December, the rain falls for 18.6 days and regularly aggregates up to 1.42" (36mm) of precipitation. In Jayuya, during the entire year, the rain falls for 249.1 days and collects up to 28.82" (732mm) of precipitation.

Daylight

With an average of 11h and 6min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:42 am and sunset at 5:49 pm. On the last day of December, sunrise is at 6:57 am and sunset at 6:01 pm AST.

Sunshine

In Jayuya, the average sunshine in December is 7h.

UV index

The months with the lowest UV index in Jayuya, Puerto Rico, are January through April, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 6 during December leads to these instructions:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.