August weather forecast
Kiawah Island, SC

In August, a gradual cooling trend begins in Kiawah Island, although temperatures remain high. The rainfall in August significantly increases compared with July, making it the wettest month. The winds slow down a bit, providing little relief from the warmth. Despite the wetter conditions, beaches and tourist spots remain open, welcoming visitors with abundant sunlight and warm waters.

Temperature

August in Kiawah Island notes an average high-temperature of a still tropical 86°F (30°C), subtly differing from July's 86.2°F (30.1°C). August is characterized by a steady nighttime low-temperature of 78.4°F (25.8°C).

Heat index

Throughout August, the heat index is evaluated at a sweltering 98.6°F (37°C). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. Direct sunlight can potentially boost the heat index 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. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Kiawah Island, the average relative humidity in August is 77%.

Rainfall

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

Snowfall

In Kiawah Island, snow does not fall in February through November.

Daylight

In Kiawah Island, the average length of the day in August is 13h and 19min.
On the first day of the month, sunrise is at 6:35 am and sunset at 8:18 pm. On the last day of August, in Kiawah Island, sunrise is at 6:55 am and sunset at 7:45 pm EDT.

Sunshine

The average sunshine in August in Kiawah Island is 10.9h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index in Kiawah Island, South Carolina. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 7 during August translates into these guidelines:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.