December weather forecast
Aguadilla, PR

Closing the year, December's weather in Aguadilla stands apart for being the coolest month, with average highs and lows dropping to 81.5°F (27.5°C) and 76.5°F (24.7°C) respectively. Despite the drop in temperature, sea temperatures remain pleasantly warm, still remaining conducive for sea lovers. Rainfall registers a noticeable decrease, falling to 1.54" (39mm), the lowest for the year. Stronger winds prevail, with speeds reaching up to 11.2mph (18km/h), adding a crisp edge to the air. As daylight hours continue to shrink, Aguadilla bears witness to the palpable shift from the stirred climate of November to the gentle calm of the year-end.

Temperature

In December, Aguadilla's weather conditions record an average high-temperature of a still warm 81.5°F (27.5°C), demonstrating little divergence from the preceding month. Aguadilla reports an average low-temperature of 76.5°F (24.7°C) during the subtly cooler December nights.

Heat index

December's average heat index is calculated to be a hot 86°F (30°C). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important 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

In December, the average relative humidity in Aguadilla is 76%.

Rainfall

In Aguadilla, in December, during 16.7 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. Throughout the year, there are 235.5 rainfall days, and 31.97" (812mm) of precipitation is accumulated.

Ocean temperature

In Aguadilla, the average seawater temperature in December is 81.9°F (27.7°C).
Note: In water temperatures ranging between 77°F (25°C) and 84.2°F (29°C), activities such as swimming and diving become highly pleasurable for long durations.

Daylight

The month with the shortest days is December, with an average of 11h and 0min of daylight.
On the first day of the month, sunrise is at 6:44 am and sunset at 5:50 pm. On the last day of December, sunrise is at 7:00 am and sunset at 6:03 pm AST.

Sunshine

In Aguadilla, the average sunshine in December is 7.6h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 7 in December translates into this advice:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely. Beware! Reflections from sand and water can intensify the Sun's UV radiation.