September weather forecast
Maricao, PR

September ushers autumn in Maricao, Puerto Rico, characterized by a slight escalation of weather extremities. The month is distinguished by the most rainfall all year, a hefty 4.49" (114mm), significantly higher than the preceding month. As a result, cloudy skies common during this month obscure the generous daylight hours. Despite the splash, temperatures remain mild, and wind speeds reduce. Transitioning into October, a decrease in rainfall coupled with a reduction in daylight hours is observed.

Temperature

At the onset of September, Maricao records an average high-temperature of a still moderately hot 85.3°F (29.6°C), showing little deviation from the preceding month. The September nights in Maricao show a slight decrease to a mean low-temperature of 77.7°F (25.4°C).

Heat index

In September, the heat index is appraised at a very hot 96.8°F (36°C). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', blends air temperature and moisture content to represent the felt temperature to humans. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In Maricao, the average relative humidity in September is 79%.

Rainfall

In Maricao, in September, it is raining for 21.4 days, with typically 4.49" (114mm) of accumulated precipitation. In Maricao, during the entire year, the rain falls for 225.3 days and collects up to 35.04" (890mm) of precipitation.

Daylight

In Maricao, the average length of the day in September is 12h and 14min.
On the first day of September in Maricao, sunrise is at 6:13 am and sunset at 6:41 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 6:17 pm AST.

Sunshine

In September, the average sunshine in Maricao is 9.5h.

UV index

April through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.