August weather forecast
Folly Beach, SC

August in Folly Beach tends to mirror July in terms of temperatures, remaining within the range of 78.4°F (25.8°C)-86°F (-65.6°C). In relation to the previous month, there is a significant rise in rainfall in August, with the city experiencing its maximum rainfall of 1.93" (49mm). With an increase in cloud coverage and rainfall, August marks the period of the year with the highest atmospheric pressure, 29.99 in. Despite identical daylight hours, a minor decline can be noticed in the sunshine hours, from July to August.

Temperature

A minimal variation is noted in Folly Beach's average high-temperature at the onset of August, reaching a still tropical 86°F (30°C) from July's 86.2°F (30.1°C). Folly Beach encounters an average temperature dip to a warm 78.4°F (25.8°C) throughout August, subtly lower than its daytime maximum.

Heat index

The heat index value during August is evaluated at a fiery hot 98.6°F (37°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a numerical representation of warmth when taking temperature and moisture levels into account. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. 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 highly critical to babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In August, the average relative humidity is 77%.

Rainfall

August is the month with the most rainfall. Rain falls for 17.3 days and accumulates 1.93" (49mm) of precipitation.

Snowfall

In Folly Beach, snow does not fall in February through November.

Ocean temperature

August is the month with the warmest seawater, with an average ocean temperature of 83.5°F (28.6°C).
Note: Water temperature from 77°F (25°C) to 84.2°F (29°C) is considered very warm, making water activities enjoyable for prolonged periods without any uncomfortable sensations.

Daylight

In August, the average length of the day is 13h and 19min.
On the first day of the month, sunrise is at 6:34 am and sunset at 8:17 pm. On the last day of August, sunrise is at 6:54 am and sunset at 7:45 pm EDT.

Sunshine

The average sunshine in August is 10.9h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index, 7 in August, converts into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. 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-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Take note! Sand and water reflections strengthen the Sun's UV exposure.