September weather forecast
Hillsboro Beach, FL

The first month of the autumn, September, is still a warm month in Hillsboro Beach, Florida, with an average temperature fluctuating between 80.2°F (26.8°C) and 85.3°F (29.6°C).

Temperature

Transitioning into September, Hillsboro Beach records an average high-temperature of a warm 85.3°F (29.6°C), almost identical to August's 87.1°F (30.6°C). Hillsboro Beach's nights in September maintain a consistent average of 80.2°F (26.8°C), demonstrating a minimal differential from its daytime temperature.

Heat index

September's average heat index is evaluated at a sweltering 95°F (35°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is found by incorporating humidity levels into the air temperature measurement. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Hillsboro Beach, Florida, the average relative humidity in September is 74%.

Rainfall

In Hillsboro Beach, in September, it is raining for 26.9 days, with typically 7.28" (185mm) of accumulated precipitation. In Hillsboro Beach, during the entire year, the rain falls for 243.5 days and collects up to 53.31" (1354mm) of precipitation.

Daylight

In September, the average length of the day in Hillsboro Beach is 12h and 18min.
On the first day of September, sunrise is at 7:00 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:07 pm EDT.

Sunshine

In September, the average sunshine in Hillsboro Beach is 8.9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Hillsboro Beach. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Deflect overexposure. Sun protection is a necessity. 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. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.