September weather forecast
Sunset Beach, FL

The first month of the autumn, September, is still a tropical month in Sunset Beach, Florida, with an average temperature varying between 76.1°F (24.5°C) and 88.7°F (31.5°C).

Temperature

As Sunset Beach welcomes September, the average high-temperature is noted at a still hot 88.7°F (31.5°C), closely aligning with the preceding month. The average temperature drops to a moderately hot 76.1°F (24.5°C) during the night in the month of September.

Heat index

September's heat index is calculated to be an extremely hot 104°F (40°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. 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 hold particular importance for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

The average relative humidity in September is 74%.

Rainfall

In Sunset Beach, in September, it is raining for 21.2 days, with typically 3.9" (99mm) of accumulated precipitation. In Sunset Beach, Florida, during the entire year, the rain falls for 178.2 days and collects up to 32.87" (835mm) of precipitation.

Daylight

The average length of the day in September in Sunset Beach, Florida, is 12h and 19min.
On the first day of September in Sunset Beach, sunrise is at 7:10 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 in Sunset Beach is 8.9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Sunset Beach. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.