December weather forecast
Vega Baja, PR

December marks the low point in Vega Baja's annual temperature cycle. The city experiences its coldest temperature of the year, dropping to 81.3°F (27.4°C) during the day and 75.2°F (24°C) at night. With a wind speed of 9.3mph (15km/h), the chill factor considerably increases. Despite the overall lower temperatures, December presents a comfortable and festive atmosphere, making it a perfect time for holiday celebrations. As the month concludes, Vega Baja awaits another cycle of diverse weather patterns in the new year.

Temperature

As November transitions into December, Vega Baja records an average high-temperature of a still warm 81.3°F (27.4°C), showing a gentle shift from the preceding month. Vega Baja maintains a near steady average temperature of 75.2°F (24°C) during the nights of December, demonstrating little drop from daytime highs.

Heat index

During December, the heat index is calculated to be a hot 86°F (30°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.
It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', comes about by integrating the temperature readings with the humidity levels. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.

Humidity

In December, the average relative humidity is 78%.

Rainfall

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

Daylight

December has the shortest days of the year, with an average of 11h and 0min of daylight.
On the first day of December, 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 6:00 pm AST.

Sunshine

In Vega Baja, the average sunshine in December is 6.9h.

UV index

January through March and December, with an average maximum UV index of 6, are months with the lowest UV index in Vega Baja. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 6 translates into these guidelines:
Resist overexposure. Safeguarding from solar damage is indispensable. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.