September weather forecast
South Miami Heights, FL

The first month of the autumn, September, is still a hot month in South Miami Heights, Florida, with an average temperature ranging between max 88.2°F (31.2°C) and min 79.7°F (26.5°C).

Temperature

The beginning of September reveals an average high-temperature of a still tropical 88.2°F (31.2°C), showing minimal deviation from the previous month. South Miami Heights, in September, registers a nighttime average temperature of 79.7°F (26.5°C).

Heat index

For most parts of September, the heat index is appraised at a torrid 102.2°F (39°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. 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 South Miami Heights, the average relative humidity in September is 72%.

Rainfall

In South Miami Heights, in September, during 16.1 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. Throughout the year, in South Miami Heights, there are 123.4 rainfall days, and 9.61" (244mm) of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 17min.
On the first day of the month, sunrise is at 7:02 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:13 am and sunset at 7:08 pm EDT.

Sunshine

In South Miami Heights, the average sunshine in September is 9h.

UV index

April through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Deflect overexposure. Sun protection is a necessity. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.