January weather forecast
Jayuya, PR

The inaugural month of the year in Jayuya, Puerto Rico presents both warmth and a fair share of rainfall. January's weather, less humid than incoming February, possesses an average relative humidity of 79%. The mercury tends to oscillate between a daily high of 81°F (27.2°C) and low of 71.2°F (21.8°C), providing a comfortable warmth. Cloud cover is moderate, making room for roughly nine hours of sunshine out of about 11 daylight hours. The periodic gusts of wind, reaching to around 10.3mph (16.6km/h), bring an enjoyable coolness to the otherwise warm days.

Temperature

January, noted for its average high-temperature of 81°F (27.2°C) and an average low-temperature of 71.2°F (21.8°C), is considered the coldest month in Jayuya.

Heat index

The heat index value during January is calculated to be a tropical 86°F (30°C). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.

Humidity

In January, the average relative humidity is 79%.

Rainfall

In Jayuya, Puerto Rico, in January, it is raining for 16.2 days, with typically 0.91" (23mm) of accumulated precipitation. Throughout the year, there are 249.1 rainfall days, and 28.82" (732mm) of precipitation is accumulated.

Daylight

The average length of the day in January is 11h and 11min.
On the first day of the month, sunrise is at 6:57 am and sunset at 6:01 pm. On the last day of January, in Jayuya, sunrise is at 6:59 am and sunset at 6:19 pm AST.

Sunshine

In January, the average sunshine in Jayuya is 9.1h.

UV index

The months with the lowest UV index are January through April, November and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In January, an average UV index of 6 transforms into the following instructions:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Experience reduced UV exposure by about half when donning a wide-brim hat.