September weather forecast
Aguadilla, PR

September in Aguadilla signals a gradual transition from the sweltering summer towards the cooler autumn months. Despite the sea temperature peaking at 84.9°F (29.4°C), the overall climate implies a subtle cool-down is on the horizon. Rainfall continues its strong presence, recording an average of 3.9" (99mm), reminiscent of May's levels. The city continues to irrigate its landscapes, upholding the lush, vibrant panoramas. September's presiding conditions lay a testament to Aguadilla's tropical climate profile.

Temperature

September, characterized by an average high temperature of 84.9°F (29.4°C) and a low temperature of 79.7°F (26.5°C), is generally the warmest month.

Heat index

For September, the heat index is appraised at a torrid 95°F (35°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. 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 essentially critical for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In Aguadilla, the average relative humidity in September is 77%.

Rainfall

The month with the most rainfall is September, when the rain falls for 21.4 days and typically aggregates up to 3.9" (99mm) of precipitation.

Ocean temperature

With an average ocean temperature of 84.9°F (29.4°C), September is the month with the warmest seawater in Aguadilla.
Note: Water temperatures ranging between 77°F (25°C) and 84.2°F (29°C) are regarded as very warm, making swimming, diving, and similar water activities pleasurable for extended periods.

Daylight

In Aguadilla, 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, in Aguadilla, sunrise is at 6:19 am and sunset at 6:17 pm AST.

Sunshine

The average sunshine in September in Aguadilla is 9.5h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 7 during September translates into the following guidance:
Guard oneself from overexposure. Defence against sun injury is vital. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Heads up! Sand and water reflection magnifies the UV exposure from the Sun.