September weather forecast
Villalba, PR

September in Villalba sees a mild drop in temperatures from August. Albeit, rainfall remains high surpassing previous month, scoring at 4.45" (113mm). Despite the increased showers, the city's vibrant experiences are far from dulled. Continuous gusts, somewhat slowed from August's speed, blend in seamlessly, assisting in making the weather enjoyable.

Temperature

September's beginning signals an average high-temperature of a warm 85.8°F (29.9°C), barely different from August's 86.5°F (30.3°C). In the month of September, the nighttime temperature dips to a steady average of 75.7°F (24.3°C).

Heat index

For September, the heat index is evaluated at a fiery hot 98.6°F (37°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', quantifies the warmth felt when relative humidity is considered. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In Villalba, the average relative humidity in September is 80%.

Rainfall

September is the month with the most rainfall in Villalba, Puerto Rico. Rain falls for 22.7 days and accumulates 4.45" (113mm) of precipitation.

Daylight

The average length of the day in September is 12h and 14min.
On the first day of September in Villalba, sunrise is at 6:11 am and sunset at 6:39 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 6:15 pm AST.

Sunshine

In Villalba, the average sunshine in September is 9.2h.

UV index

May through October, with an average maximum UV index of 7, are months with the highest UV index in Villalba. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 7 during September translates into the following guidance:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.