September weather forecast
Hormigueros, PR

As summer draws to a close, September presents a slight dip in temperatures. With the declining daylight hours, Hormigueros eases out of the summer schedule. A steady decrease in rainfall suggests the onset of the drier months ahead. Nevertheless, the humidity hangs in the air, offering reminders of past summer glory. The highest average barometric pressure at 29.91" (760mm) earmarks September.

Temperature

Hormigueros experiences a minor change to a still moderately hot 85.6°F (29.8°C) in average high-temperature during September, closely reflecting August. A minor drop in temperature is observed from daytime highs in Hormigueros during the nights of September, averaging a still warm 78.6°F (25.9°C).

Heat index

Throughout September, the heat index is estimated at a torrid 96.8°F (36°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild 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 'felt air temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In Hormigueros, Puerto Rico, the average relative humidity in September is 77%.

Rainfall

September is the month with the most rainfall. Rain falls for 21.7 days and accumulates 3.58" (91mm) of precipitation.

Daylight

In Hormigueros, the average length of the day in September is 12h and 14min.
On the first day of the month, sunrise is at 6:14 am and sunset at 6:42 pm. On the last day of September, sunrise is at 6:18 am and sunset at 6:17 pm AST.

Sunshine

In September, the average sunshine is 9.3h.

UV index

March through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average UV index of 7 in September transforms into this advice:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.