August weather forecast
Port Royal, SC

August weather in Port Royal remains comparable to July, with lingering high temperatures and elevated humidity. The monthly average high temperature is slightly less at 88.9°F (31.6°C), but the lowest average is a tad bit higher at 76.6°F (24.8°C). Rainfall begins to increase, with August receiving an average of 3.54" (90mm), the highest in the year. Despite the occasional shower, August still offers a host of outdoor activities for tourists and locals.

Temperature

In August, Port Royal experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 89.6°F (32°C) in July to a still tropical 88.9°F (31.6°C). In Port Royal, an average low-temperature of 76.6°F (24.8°C) is recorded during August nights.

Heat index

The average heat index in August is estimated at a blisteringly hot 105.8°F (41°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. 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. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In August, the average relative humidity in Port Royal, South Carolina, is 76%.

Rainfall

The month with the most rainfall is August, when the rain falls for 21.8 days and typically aggregates up to 3.54" (90mm) of precipitation.

Snowfall

In Port Royal, snow does not fall in March through November.

Daylight

The average length of the day in August is 13h and 18min.
On the first day of August, sunrise is at 6:37 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 7:48 pm EDT.

Sunshine

The average sunshine in August is 10.8h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index in Port Royal. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 7 during August translates into the following directions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. A hat with a broad brim is indispensable, filtering out up to half of UV rays.