August weather forecast
Charleston, West VA

The calm Kanawha River in front of Charleston, West Virginia, reflecting the city in its water
The calm Kanawha River in front of Charleston, West Virginia, reflecting the city in its water

Weather in August

August, the last month of the summer in Charleston, is another warm month, with an average temperature ranging between max 84.6°F (29.2°C) and min 61.3°F (16.3°C).

Temperature

In August, the average high-temperature is essentially the same as in July - a still warm 84.6°F (29.2°C). In Charleston, the average low-temperature is 61.3°F (16.3°C).

Heat index

In August, the average heat index is calculated to be a tropical 93.9°F (34.4°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, differences in body mass, height, and shape, metabolic differences). Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The months with the lowest humidity are June through August and November, with an average relative humidity of 76%.

Rainfall

In Charleston, it is raining for 15.5 days, with typically 2.09" (53mm) of accumulated precipitation. In Charleston, West Virginia, during the entire year, the rain falls for 180.4 days and collects up to 34.06" (865mm) of precipitation.

Snowfall

In Charleston, snow does not fall in June through September.

Daylight

In August, the average length of the day in Charleston is 13h and 37min.
On the first day of the month, sunrise is at 6:29 am and sunset at 8:36 pm. On the last day of August, in Charleston, sunrise is at 6:55 am and sunset at 7:58 pm EDT.

Sunshine

August has the most sunshine of the year, with an average of 10.2h of sunshine.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 6 in August transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in August in Charleston?

In Charleston, in August, the average high-temperature is 84.6°F (29.2°C), and the average low-temperature is 61.3°F (16.3°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 93.9°F (34.4°C).

What are the least humid months in Charleston?

June through August and November, with an average relative humidity of 76%, are the least humid months in Charleston, West Virginia.

What is the average humidity in August in Charleston?

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

How many days does it rain in August in Charleston?

In Charleston, West Virginia, during August, the rain falls for 15.5 days and regularly aggregates up to 2.09" (53mm) of precipitation.

When it does not snow in Charleston?

June through September are months without snowfall in Charleston, West Virginia.

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

In August, the average day length in Charleston, West Virginia, is 13h and 37min.

When is the sunrise / sunset in August in Charleston?

On the first day of August in Charleston, West Virginia, sunrise is at 6:29 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 7:58 pm EDT.

What month has the most sunshine in Charleston?

The month with the most sunshine in Charleston, West Virginia, is August, with an average of 10.2h of sunshine.

How long on average sun shines in August in Charleston?

The average sunshine duration in August in Charleston, West Virginia, is 10.2h.

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

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

What is the UV index intensity in August in Charleston?

In August, the average daily maximum UV index in Charleston, West Virginia, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Charleston, West VA

Average temperature in August - Charleston, West VA
  • Average high temperature in August: 84.6°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in August: 61.3°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).

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Average pressure in August
Charleston, West VA

Average pressure in August - Charleston, West VA
  • Average pressure in August: 30.02"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

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Average wind speed in August
Charleston, West VA

Average wind speed in August - Charleston, West VA
  • Average wind speed in August: 4mph

The windiest month (with the highest average wind speed) is February (6.6mph).
The calmest month (with the lowest average wind speed) is August (4mph).

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Average humidity in August
Charleston, West VA

Average humidity in August - Charleston, West VA
  • Average humidity in August: 76%

The months with the highest relative humidity are January and February (82%).
The months with the lowest relative humidity are June, July, August and November (76%).

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Average rainfall in August
Charleston, West VA

Average rainfall in August - Charleston, West VA
  • Average rainfall in August: 2.09"

The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in August
Charleston, West VA

Average rainfall days in August - Charleston, West VA
  • Average rainfall days in August: 15.5 days

The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is November (11 days).

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Average snowfall in August
Charleston, West VA

Average snowfall in August - Charleston, West VA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (5.51").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Charleston, West VA

Average snowfall days in August - Charleston, West VA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Charleston, West VA

Average daylight in August / Average sunshine in August - Charleston, West VA
  • Average daylight in August: 13h and 37min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 33min).

  • Average sunshine in August: 10h and 12min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in August
Charleston, West VA

Average sunshine days in August - Charleston, West VA
  • Average sunshine days in August: 13.9 days

The months with the most sunshine days are October and November (16.5 days).
The month with the least sunshine days is February (8.4 days).

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Average UV index in August
Charleston, West VA

Average UV index in August - Charleston, West VA
  • 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, February and December (UV index 2).

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Average cloud cover in August
Charleston, West VA

Average cloud cover in August - Charleston, West VA
  • Average cloud cover in August: 33

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in August
Charleston, West VA

Average visibility in August - Charleston, West VA
  • Average visibility in August: 5mi

The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).

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