September weather forecast
Charlotte Harbor, FL

The first month of the autumn, September, is still a hot month in Charlotte Harbor, Florida, with an average temperature varying between 75.6°F (24.2°C) and 88.3°F (31.3°C).

Temperature

Charlotte Harbor experiences an average high-temperature of a still hot 88.3°F (31.3°C) in September, marking an insignificant shift from 90.1°F (32.3°C) in August. Throughout September, Charlotte Harbor anticipates an average low-temperature of 75.6°F (24.2°C).

Heat index

The heat index value during September is calculated to be a scorching 105.8°F (41°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The most humid month is September, with an average relative humidity of 78%.

Rainfall

In September, in Charlotte Harbor, the rain falls for 22.5 days. Throughout September, 3.03" (77mm) of precipitation is accumulated. Throughout the year, there are 176 rainfall days, and 26.26" (667mm) of precipitation is accumulated.

Ocean temperature

In September, the average ocean temperature in Charlotte Harbor is 84.9°F (29.4°C).
Note: Ideal surface water temperatures for any water activity fall between 77°F (25°C) and 84.2°F (29°C), offering maximum enjoyment for lengthened periods.

Daylight

In Charlotte Harbor, Florida, the average length of the day in September is 12h and 19min.
On the first day of the month, sunrise is at 7:07 am and sunset at 7:48 pm. On the last day of September, in Charlotte Harbor, sunrise is at 7:20 am and sunset at 7:15 pm EDT.

Sunshine

The average sunshine in September in Charlotte Harbor is 9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Notice! Sand and water reflections contribute to a stronger UV exposure.