August weather forecast
Charleston Heights, SC

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Weather in August

The last month of the summer, August, is another hot month in Charleston Heights, South Carolina, with temperature in the range of an average low of 76.3°F (24.6°C) and an average high of 88.3°F (31.3°C).

Temperature

An average high-temperature of a still hot 88.3°F (31.3°C) marks August, exhibiting a close resemblance to the conditions in July. Nighttime temperatures in August average to a warm 76.3°F (24.6°C) in Charleston Heights, South Carolina.

Heat index

For most parts of August, the heat index is calculated to be a blistering 104°F (40°C). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
Heat index values are typically calculated for conditions of shade and a light breeze. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In August, the average relative humidity in Charleston Heights is 76%.

Rainfall

The month with the most rainfall in Charleston Heights is August, when the rain falls for 22.7 days and typically aggregates up to 4.29" (109mm) of precipitation.

Snowfall

In Charleston Heights, snow does not fall in March through November.

Daylight

The average length of the day in August is 13h and 20min.
On the first day of August in Charleston Heights, sunrise is at 6:34 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 7:45 pm EDT.

Sunshine

In Charleston Heights, South Carolina, the average sunshine in August is 10.7h.

UV index

The months with the highest UV index in Charleston Heights are May through August, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: A daily high UV index of 7 in August leads to these guidelines:
Deter overexposure. Protecting against the sun's effects is essential. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. 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.
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Frequently asked questions

How hot is it in Charleston Heights in August?

The high-temperature in Charleston Heights during August is 88.3°F (31.3°C) and the low-temperature is 76.3°F (24.6°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 104°F (40°C).

What is the average humidity in August in Charleston Heights?

In Charleston Heights, the average relative humidity in August is 76%.

What is the rainiest month in Charleston Heights?

The month with the most rainfall is August, when the rain falls for 22.7 days and typically aggregates up to 4.29" (109mm) of precipitation.

How much does it rain in Charleston Heights in August?

In Charleston Heights, South Carolina, during August, the rain falls for 22.7 days and regularly aggregates up to 4.29" (109mm) of precipitation.

When it does not snow in Charleston Heights?

In Charleston Heights, South Carolina, snow does not fall in March through November.

What is the average length of the day in August in Charleston Heights?

In August, the average day length is 13h and 20min.

When are sunrise and sunset in August in Charleston Heights?

In August, on the first day of the month, sunrise is at 6:34 am and sunset at 8:18 pm. On the last day of the month, in Charleston Heights, sunrise is at 6:54 am and sunset at 7:45 pm EDT.

How many hours of sunshine does Charleston Heights have in August?

The average sunshine duration in August in Charleston Heights is 10.7h.

When is the highest UV index in Charleston Heights?

The months with the highest UV index in Charleston Heights are May through August, with an average maximum UV index of 7.

What is the UV index intensity in August in Charleston Heights?

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

Average temperature in August
Charleston Heights, SC

Average temperature in August - Charleston Heights, SC
  • Average high temperature in August: 88.3°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (56.8°F).

  • Average low temperature in August: 76.3°F

The month with the highest average low temperature is July (76.5°F).
The coldest month (with the lowest average low temperature) is January (42.8°F).

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Average pressure in August
Charleston Heights, SC

Average pressure in August - Charleston Heights, 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).

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Average wind speed in August
Charleston Heights, SC

Average wind speed in August - Charleston Heights, SC
  • Average wind speed in August: 6.5mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity in August
Charleston Heights, SC

Average humidity in August - Charleston Heights, SC
  • Average humidity in August: 76%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is March (72%).

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Average rainfall in August
Charleston Heights, SC

Average rainfall in August - Charleston Heights, SC
  • Average rainfall in August: 4.29"

The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in August
Charleston Heights, SC

Average rainfall days in August - Charleston Heights, SC
  • Average rainfall days in August: 22.7 days

The month with the highest number of rainy days is August (22.7 days).
The month with the least rainy days is November (6.9 days).

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Average snowfall days in August
Charleston Heights, SC

Average snowfall days in August - Charleston Heights, SC
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in August /
Average sunshine in August
Charleston Heights, SC

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

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 4min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

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Average sunshine days in August
Charleston Heights, SC

Average sunshine days in August - Charleston Heights, SC
  • Average sunshine days in August: 6.1 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is August (6.1 days).

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Average UV index in August
Charleston Heights, SC

Average UV index in August - Charleston Heights, 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).

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Average cloud cover in August
Charleston Heights, SC

Average cloud cover in August - Charleston Heights, SC
  • Average cloud cover in August: 29

The month with the most cloud cover is December (Cloud cover 40).
The months with the least cloud cover are June and July (Cloud cover 26).

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Average visibility in August
Charleston Heights, SC

Average visibility in August - Charleston Heights, 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).

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Charleston Heights, South Carolina, USA

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