September weather forecast
Biscayne Park, FL

The first month of the autumn, September, is still a tropical month in Biscayne Park, Florida, with an average temperature ranging between min 80.6°F (27°C) and max 86.4°F (30.2°C).

Temperature

The shift into September finds Biscayne Park at an average high-temperature of a still tropical 86.4°F (30.2°C), closely comparable to August's conditions. Biscayne Park observes a minimal variance in temperature, with a consistent average low of 80.6°F (27°C) during the nights of September.

Heat index

For September, the heat index is computed to be a fiery hot 96.8°F (36°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. 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 'real feel' or 'felt air temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In September, the average relative humidity is 73%.

Rainfall

In Biscayne Park, in September, during 21.3 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. Throughout the year, there are 166.7 rainfall days, and 12.91" (328mm) of precipitation is accumulated.

Daylight

In Biscayne Park, Florida, the average length of the day in September is 12h and 18min.
On the first day of September in Biscayne Park, Florida, sunrise is at 7:01 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:08 pm EDT.

Sunshine

In Biscayne Park, the average sunshine in September is 9h.

UV index

The months with the highest UV index in Biscayne Park are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 7 in September interprets into the following recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.