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 advent of December brings an average high-temperature of a still moderately hot 82°F (27.8°C), exhibiting minor difference from the previous month. Jayuya throughout December, experiences an average nighttime temperature of 72.7°F (22.6°C).

Heat index

December's average heat index is calculated to be a hot 87.8°F (31°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.

Humidity

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

Rainfall

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

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

The average sunshine in December 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 value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 6 during December translates into the following directions:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.