September weather forecast
Brandon, FL

September, the first month of the autumn in Brandon, is still a tropical month, with temperature in the range of an average low of 74.8°F (23.8°C) and an average high of 88.7°F (31.5°C).

Temperature

September's commencement is accompanied by an average high-temperature of a still tropical 88.7°F (31.5°C), diverging marginally from August's 90.3°F (32.4°C). Brandon reports an average low-temperature of 74.8°F (23.8°C) during the nights of September.

Heat index

The heat index for September is appraised at a blistering 105.8°F (41°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

August, September and December, with an average relative humidity of 76%, are the most humid months in Brandon.

Rainfall

In Brandon, in September, it is raining for 19.6 days, with typically 1.65" (42mm) of accumulated precipitation. Throughout the year, in Brandon, there are 160.9 rainfall days, and 16.77" (426mm) of precipitation is accumulated.

Daylight

The average length of the day in September in Brandon, Florida, is 12h and 19min.
On the first day of September, sunrise is at 7:08 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:15 pm EDT.

Sunshine

The average sunshine in September is 8.9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Brandon. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 7 in September interprets into the following advice:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.