September weather forecast
Yabucoa, PR

September showers Yabucoa in a similar tropical climate as the preceding months. This month blends the summer's warmed-up temperatures with the approaching fall's subtlety. Henceforth, it's in keeping with the pattern of increased rainfall and extended daylight. Remarkably, the wind speed reduces to an average of 7.1mph (11.4km/h), signalling the slowest wind pace in the year. The weather remains relatively constant, providing a seamless transition into October.

Temperature

In September, Yabucoa's weather conditions record an average high-temperature of a still moderately hot 84.6°F (29.2°C), demonstrating little divergence from the preceding month. September introduces a small decrease to a nighttime average of 78.1°F (25.6°C).

Heat index

September's heat index is calculated to be a torrid 95°F (35°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', reflects the feeling of heat when considering both air temperature and humidity. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in September is 80%.

Rainfall

In Yabucoa, during September, the rain falls for 20.4 days and regularly aggregates up to 3.62" (92mm) of precipitation. In Yabucoa, during the entire year, the rain falls for 223.2 days and collects up to 27.87" (708mm) of precipitation.

Daylight

The average length of the day in September in Yabucoa is 12h and 14min.
On the first day of September in Yabucoa, sunrise is at 6:09 am and sunset at 6:37 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 6:12 pm AST.

Sunshine

In September, the average sunshine is 9h.

UV index

The months with the highest UV index in Yabucoa, Puerto Rico, are May through November, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily high UV index of 7 in September leads to these guidelines:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.