September weather forecast
Barranquitas, PR

In September, Barranquitas starts to show signs of a slight drop in temperature. However, this month also faces the highest rainfall of the year with 4.45" (113mm) on average. Despite the decrease in daylight hours, plenty of light remains available to enjoy regularly scheduled activities. The region's tropical biodiversity flourishes under the September rains, providing a verdant spectacle to behold. Whether adventuring in the rainforests or strolling through town, September in Barranquitas presents a refreshing change of pace.

Temperature

In Barranquitas, September's average high-temperature stands at a still warm 85.1°F (29.5°C), closely related to the preceding month. Barranquitas's nighttime temperature in September experiences a slight dip from daytime highs, falling to an average of 76.6°F (24.8°C).

Heat index

September's average heat index is evaluated at a sweltering 96.8°F (36°C). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

The average relative humidity in September in Barranquitas is 80%.

Rainfall

September is the month with the most rainfall in Barranquitas. Rain falls for 24.5 days and accumulates 4.45" (113mm) of precipitation.

Daylight

In September, the average length of the day is 12h and 14min.
On the first day of September in Barranquitas, sunrise is at 6:10 am and sunset at 6:39 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 6:14 pm AST.

Sunshine

In September, the average sunshine is 9.1h.

UV index

The months with the highest UV index are May through October, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 7 during September leads to these advisories:
Fend off overexposure. Sun protection is vital. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.