September weather forecast
Charlotte Harbor, FL

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

Temperature

In September, Charlotte Harbor experiences a minor shift in meteorological conditions with average high-temperatures marked at a still hot 88.3°F (31.3°C), closely mirroring the climate in August. During September, Charlotte Harbor consistently records a temperature low averaging a warm 75.6°F (24.2°C).

Heat index

The heat index value during September is estimated at an extremely hot 105.8°F (41°C). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

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

Rainfall

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

Ocean temperature

In Charlotte Harbor, Florida, in September, the average water temperature is 84.9°F (29.4°C).
Note: Water temperatures between 77°F (25°C) and 84.2°F (29°C) are ideal for all water activities, offering enjoyment without causing discomfort over extended periods.

Daylight

In Charlotte Harbor, 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, sunrise is at 7:20 am and sunset at 7:15 pm EDT.

Sunshine

In September, the average sunshine 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 of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Warning! The Sun's UV rays intensify with reflections from sand and water.