September weather forecast
Gulf Harbors, FL

September, the first month of the autumn in Gulf Harbors, is still a tropical month, with temperature in the range of an average high of 86.4°F (30.2°C) and an average low of 77°F (25°C).

Temperature

Gulf Harbors records an average high-temperature of a still tropical 86.4°F (30.2°C) in September, closely mirroring the climate of the previous month. Gulf Harbors's nighttime temperature during September is consistently averaged at a warm 77°F (25°C).

Heat index

The average heat index in September is estimated at a sweltering 98.6°F (37°C). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. 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 'felt air temperature' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In Gulf Harbors, the average relative humidity in September is 76%.

Rainfall

In Gulf Harbors, during September, the rain falls for 20.4 days and regularly aggregates up to 2.95" (75mm) of precipitation. In Gulf Harbors, during the entire year, the rain falls for 164 days and collects up to 26.57" (675mm) of precipitation.

Daylight

In September, the average length of the day in Gulf Harbors is 12h and 19min.
On the first day of September, sunrise is at 7:09 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:17 pm EDT.

Sunshine

The average sunshine in September is 9.2h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.