July weather forecast
Folly Beach, SC

July sees Folly Beach at its warmest with temperatures ranging between 78.4°F (25.8°C) to 86.2°F (30.1°C), marking the peak of summer. Despite the increase in humidity and cloud cover from June, July records the same amount of rainfall i.e, 1.1" (28mm). Rainfall days also rise to 15.8 days, providing much needed intermittent relief from the stifling summer heat. Similarities can be drawn between July and June regarding both daylight and sunshine hours. Wind speeds in July also remain consistent bringing a steadiness to the summer season.

Temperature

July, having an average high-temperature of 86.2°F (30.1°C) and an average low-temperature of 78.4°F (25.8°C), is the warmest month.

Heat index

In July, the heat index is estimated at a sweltering 98.6°F (37°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In Folly Beach, the average relative humidity in July is 76%.

Rainfall

In Folly Beach, in July, during 15.8 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. Throughout the year, there are 113.3 rainfall days, and 10" (254mm) of precipitation is accumulated.

Snowfall

February through November are months without snowfall.

Ocean temperature

In Folly Beach, in July, the average water temperature is 82.9°F (28.3°C).
Note: For swimming, diving, or other water activities, the temperature range of 77°F (25°C) to 84.2°F (29°C) is perceived as exceptionally enjoyable and comfortable even for prolonged periods.

Daylight

In Folly Beach, the average length of the day in July is 14h and 3min.
On the first day of July, sunrise is at 6:16 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 6:33 am and sunset at 8:18 pm EDT.

Sunshine

With an average of 11h of sunshine, July has the most sunshine of the year in Folly Beach, South Carolina.

UV index

The months with the highest UV index in Folly Beach are May through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index, 7 during July, leads to the following recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.