August weather forecast
Greenville, SC

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The scenic Greenville City of South Carolina, with a view of the curved bridge over a small river flowing through the city
The scenic Greenville City of South Carolina, with a view of the curved bridge over a small river flowing through the city

Weather in August

Rounding off the summer season, August weather in Greenville exhibits a downward trend from July's peak. Marginal changes are observed as temperatures drop only slightly to record 88.5°F (31.4°C) daytime peaks. Though there's a reduction in temperature and an increase in rainfall, residents continue to soak up the sunshine. August is no stranger to the occasional thunderstorm, often cooling off the city after a series of warm days.

Temperature

Greenville, South Carolina, marks the start of August with an average high-temperature of a still hot 88.5°F (31.4°C), hinting at a slight fluctuation from July's 90.1°F (32.3°C). An average low-temperature of 67.3°F (19.6°C) is recorded in the month of August.

Heat index

During August, the heat index is calculated to be a fiery hot 102.2°F (39°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Heat index data is primarily for areas with shade and subjected to light 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 'real feel' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

In August, the average relative humidity is 71%.

Rainfall

In Greenville, in August, it is raining for 17.3 days, with typically 3.27" (83mm) of accumulated precipitation. In Greenville, during the entire year, the rain falls for 163.5 days and collects up to 35.47" (901mm) of precipitation.

Snowfall

April through October are months without snowfall in Greenville, South Carolina.

Daylight

In Greenville, the average length of the day in August is 13h and 25min.
On the first day of the month, sunrise is at 6:39 am and sunset at 8:31 pm. On the last day of August, sunrise is at 7:02 am and sunset at 7:57 pm EDT.

Sunshine

In Greenville, the average sunshine in August is 10.4h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: A daily high UV index of 6 in August leads to these guidelines:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Greenville in August?

The high-temperature, in August, in Greenville, is 88.5°F (31.4°C), while the low-temperature averages to 67.3°F (19.6°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, in August is calculated to be 102.2°F (39°C).

What is the average humidity in August in Greenville?

The average relative humidity in August in Greenville, South Carolina, is 71%.

How much does it rain in Greenville in August?

In August, in Greenville, South Carolina, the rain falls for 17.3 days. Throughout August, 3.27" (83mm) of precipitation is accumulated.

When it does not snow in Greenville?

In Greenville, South Carolina, snow does not fall in April through October.

What is the average length of the day in August in Greenville?

In Greenville, South Carolina, the average day length in August is 13h and 25min.

What time are sunrise and sunset in August in Greenville?

On the first day of August in Greenville, South Carolina, sunrise is at 6:39 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 7:57 pm EDT.

How many hours of sunshine does Greenville have in August?

The average sunshine duration in August is 10.4h.

What are the months with the highest UV index in Greenville?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

How high is the UV index in August in Greenville?

In Greenville, South Carolina, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Greenville, SC

Average temperature in August - Greenville, SC
  • Average high temperature in August: 88.5°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (49.6°F).

  • Average low temperature in August: 67.3°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).

Average pressure in August
Greenville, SC

Average pressure in August - Greenville, SC
  • Average pressure in August: 30.01"Hg

The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

Average wind speed in August
Greenville, SC

Average wind speed in August - Greenville, SC
  • Average wind speed in August: 4.3mph

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity in August
Greenville, SC

Average humidity in August - Greenville, SC
  • Average humidity in August: 71%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (69%).

Average rainfall in August
Greenville, SC

Average rainfall in August - Greenville, SC
  • Average rainfall in August: 3.27"

The wettest month (with the highest rainfall) is December (4.06").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in August
Greenville, SC

Average rainfall days in August - Greenville, SC
  • Average rainfall days in August: 17.3 days

The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is October (9.4 days).

Average snowfall in August
Greenville, SC

Average snowfall in August - Greenville, SC
  • Average snowfall in August: 0"

The month with the highest snowfall is December (1.57").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August
Greenville, SC

Average snowfall days in August - Greenville, SC
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Greenville, SC

Average daylight in August / Average sunshine in August - Greenville, SC
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

Average sunshine days in August
Greenville, SC

Average sunshine days in August - Greenville, SC
  • Average sunshine days in August: 11.3 days

The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is July (10.2 days).

Average UV index in August
Greenville, SC

Average UV index in August - Greenville, SC
  • Average UV index in August: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in August
Greenville, SC

Average cloud cover in August - Greenville, SC
  • Average cloud cover in August: 30

The months with the most cloud cover are February and December (Cloud cover 41).
The months with the least cloud cover are June and July (Cloud cover 27).

Average visibility in August
Greenville, SC

Average visibility in August - Greenville, 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).

Greenville, South Carolina, USA

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