September weather forecast
Jayuya, PR

Shifting into autumnal gear, September poses a slightly cooler yet still quite balmy transition phase in Jayuya's seasonal cycle. During this month, the town experiences the highest rainfall of the year, dousing the land with around 4.45in of precipitation. The temperatures take a subtle dip, with the daily high averaging at around 85.8°F (29.9°C). Regardless of the increase in rainfall, the sun loyally dispenses an average of 9.2 hours of sunshine within the 12.2 daylight hours. The steadily blowing winds, averaging at approximately 6mph (9.7km/h), drive away the heat, leaving a more agreeable atmosphere in their wake.

Temperature

Jayuya experiences a recorded average high-temperature of a warm 85.8°F (29.9°C) in September, closely aligned with August's 86.5°F (30.3°C). In the month of September, Jayuya witnesses a consistent average low-temperature of 75.7°F (24.3°C).

Heat index

The heat index value for September is calculated to be a fiery hot 98.6°F (37°C). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. 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 highly critical to babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

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

Rainfall

September is the month with the most rainfall. Rain falls for 22.7 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, sunrise is at 6:12 am and sunset at 6:40 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 6:15 pm AST.

Sunshine

In September, the average sunshine is 9.2h.

UV index

The months with the highest UV index are May through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Fend off overexposure. Sun protection is vital. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Opt for tightly woven and loose clothing to enhance protection from the Sun.