September weather forecast
West Miami, FL

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

Temperature

With the advent of September, West Miami experiences an average high-temperature of a still tropical 86.9°F (30.5°C), mirroring a close resemblance to the previous month. September nights in West Miami anticipate an average temperature of 80.6°F (27°C), a modest decline from the daytime.

Heat index

September's mean heat index is evaluated at a very hot 98.6°F (37°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

The average relative humidity in September in West Miami is 72%.

Rainfall

In West Miami, Florida, in September, it is raining for 18.5 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, there are 144.3 rainfall days, and 10.55" (268mm) of precipitation is accumulated.

Daylight

The average length of the day in September 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 West Miami, the average sunshine in September is 9.1h.

UV index

May through October, with an average maximum UV index of 7, are months with the highest UV index in West Miami. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 7 during September, leads to the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.