September weather forecast
Coral Gables, FL

September, the first month of the autumn in Coral Gables, is also a hot month, with an average temperature fluctuating between 80.6°F (27°C) and 86.9°F (30.5°C).

Temperature

The shift into September finds Coral Gables at an average high-temperature of a still hot 86.9°F (30.5°C), closely comparable to August's conditions. In September, a low-temperature average of 80.6°F (27°C) is characteristic of Coral Gables, marking a minor shift from daytime temperatures.

Heat index

September's average heat index is appraised at a fiery hot 98.6°F (37°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. 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.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

The average relative humidity in September is 72%.

Rainfall

In Coral Gables, during September, the rain falls for 18.5 days and regularly aggregates up to 1.02" (26mm) of precipitation. In Coral Gables, Florida, during the entire year, the rain falls for 144.3 days and collects up to 10.55" (268mm) of precipitation.

Ocean temperature

In Coral Gables, in September, the average water temperature is 85.5°F (29.7°C).
Note: Water activities including swimming and diving are pleasurable in temperatures between 77°F (25°C) and 84.2°F (29°C), ensuring comfort and enjoyment for extended time frames.

Daylight

In September, the average length of the day in Coral Gables is 12h and 17min.
On the first day of September, sunrise is at 7:01 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 7:08 pm EDT.

Sunshine

In September, the average sunshine is 9.1h.

UV index

May through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 7 in September translates into this advice:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Stay sun-safe with clothing that is both closely woven and worn loosely. Watch out! Sand and water enhance the UV exposure you receive.