September weather forecastBeaufort, SC

Weather in September

When September arrives, Beaufort hits the pause button on its vibrant summer rhythm and gradually starts to welcome the autumn season. Although temperatures begin to decline marginally, the remnants of summer still keep the city sufficiently warm. The daylight hours noticeably shorten, indicating the change of seasons, particularly towards the month's end. Despite the announcement of autumn, September in Beaufort keeps the summer spirit alive, at least in the early part of the month.

Temperature

Beaufort's transition from August to September introduces an average high-temperature of a warm 85.1°F (29.5°C), marking an insignificant variation from the 88.9°F (31.6°C). In September, Beaufort reports a consistent average low-temperature of 72.5°F (22.5°C) during the nights.

Heat index

For September, the heat index is appraised at a torrid 95°F (35°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', takes into account both air temperature and humidity to illustrate what people actually feel. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In September, the average relative humidity is 75%.

Rainfall

In Beaufort, during September, the rain falls for 14.9 days and regularly aggregates up to 2.28" (58mm) of precipitation. Throughout the year, there are 154.7 rainfall days, and 23.11" (587mm) of precipitation is accumulated.

Snowfall

March through November are months without snowfall in Beaufort.

Daylight

In Beaufort, South Carolina, the average length of the day in September is 12h and 22min.
On the first day of the month, sunrise is at 6:58 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:16 am and sunset at 7:08 pm EDT.

Sunshine

In Beaufort, the average sunshine in September is 8.7h.

UV index

In Beaufort, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 6 suggests this advice:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.