August weather forecastKiawah Island, SC
August
Weather in August
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
The commencement of August introduces an average high-temperature of a still hot 86°F (30°C), closely mirroring the preceding month. Nighttime readings during August register a minimal drop from daytime highs, averaging at a warm 78.4°F (25.8°C).Heat index
The average heat index in August is computed to be a very hot 98.6°F (37°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.The metrics for the heat index are tailored for both shady environments and light winds. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
In Kiawah Island, the average relative humidity in August is 77%.Rainfall
The month with the most rainfall is August, when the rain falls for 17.3 days and typically aggregates up to 1.93" (49mm) of precipitation.Snowfall
February through November are months without snowfall.Daylight
In Kiawah Island, South Carolina, the average length of the day in August is 13h and 19min.On the first day of August, sunrise is at 6:35 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 7:45 pm EDT.
Sunshine
In Kiawah Island, 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 of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: In August, the UV index of 7 transforms into the following advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Kiawah Island, SC
- Average high temperature in August: 86°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (57°F).
- Average low temperature in August: 78.4°F
The months with the highest average low temperature are July and August (78.4°F).
The coldest month (with the lowest average low temperature) is January (46.4°F).
Average pressure in August
Kiawah Island, SC
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in August
Kiawah Island, SC
- Average wind speed in August: 8.8mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.8mph).
Average humidity in August
Kiawah Island, SC
- Average humidity in August: 77%
The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are January, March and October (73%).
Average rainfall in August
Kiawah Island, SC
- Average rainfall in August: 1.93"
The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in August
Kiawah Island, SC
- Average rainfall days in August: 17.3 days
The month with the highest number of rainy days is August (17.3 days).
The month with the least rainy days is November (5.2 days).
Average snowfall days in August
Kiawah Island, SC
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in August /
Average sunshine in August
Kiawah Island, SC
- Average daylight in August: 13h and 18min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in August: 10h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in August
Kiawah Island, SC
- Average sunshine days in August: 8.5 days
The month with the most sunshine days is January (23.9 days).
The month with the least sunshine days is August (8.5 days).
Average UV index in August
Kiawah Island, SC
- Average UV index in August: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in August
Kiawah Island, SC
- Average cloud cover in August: 27
The month with the most cloud cover is December (Cloud cover 39).
The months with the least cloud cover are June and July (Cloud cover 25).
Average visibility in August
Kiawah Island, SC
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
