Charleston Weather in August: Temperature, Precipitation, Wind

Temperature
22.7°C
72.9°F
High temperature
28°C
82.5°F
Low temperature
18.3°C
64.9°F
Feels like
23°C
73.4°F
Rainy days
17 days
Rainfall level
3.31mm
0.13 inch
Cloud coverage
62.9%
Wind speed
15.4km/h
9.6mph
Daylight time
13:36:53
UV index
5.9
1
clear day
20.1°C
68.0°F
2
rain
21.2°C
70.0°F
3
rain
21.5°C
71.0°F
4
rain
23.6°C
74.0°F
5
partly cloudy day
24.3°C
76.0°F
6
rain
23.6°C
74.0°F
7
rain
24.9°C
77.0°F
8
rain
22.2°C
72.0°F
9
rain
22.2°C
72.0°F
10
rain
22.0°C
72.0°F
11
partly cloudy day
22.6°C
73.0°F
12
partly cloudy day
24.2°C
76.0°F
13
partly cloudy day
25.6°C
78.0°F
14
rain
24.3°C
76.0°F
15
rain
23.4°C
74.0°F
16
rain
20.9°C
70.0°F
17
partly cloudy day
22.4°C
72.0°F
18
rain
21.6°C
71.0°F
19
clear day
18.8°C
66.0°F
20
clear day
22.1°C
72.0°F
21
partly cloudy day
24.9°C
77.0°F
22
partly cloudy day
24.6°C
76.0°F
23
partly cloudy day
24.0°C
75.0°F
24
rain
25.4°C
78.0°F
25
rain
23.1°C
74.0°F
26
partly cloudy day
24.5°C
76.0°F
27
partly cloudy day
22.8°C
73.0°F
28
rain
21.8°C
71.0°F
29
rain
22.2°C
72.0°F
30
rain
21.0°C
70.0°F
31
partly cloudy day
18.2°C
65.0°F

Charleston, United States in August experiences a warm and humid subtropical climate. The average temperature hovers around 22.7°C (72.9°F), with daytime highs reaching 28.0°C (82.5°F) and nighttime lows dipping to 18.3°C (64.9°F). Heat indices push the perceived temperature higher, with the average maximum feels-like temperature reaching 29.0°C (84.2°F).

Humidity levels are notably high in Charleston during August, averaging 81.6%. The combination of heat and humidity creates a muggy atmosphere, in popular tourist areas like the historic Charleston City Market and along the picturesque Battery promenade.

Precipitation is a common occurrence in August, with an average of 84.1 mm (3.31 inches) of rainfall. Rain falls on approximately 17 days throughout the month, covering about 14.2% of the time. Visitors to Charleston’s famous Folly Beach or Sullivan’s Island should be prepared for occasional showers.

Wind conditions in Charleston during August are moderate. Average wind speeds measure 15.4 km/h (9.6 mph), with gusts reaching up to 28.1 km/h (17.5 mph). These breezes provide some relief from the heat, especially along the Charleston Harbor.

Cloud cover is substantial, averaging 62.9% throughout the month. Despite the cloud presence, visibility remains good at 13.8 km (8.6 miles). UV index averages 5.9, indicating moderate to high sun intensity. Sunscreen is essential for those exploring outdoor attractions like Magnolia Plantation and Gardens.

Severe weather risk in August stands at 18.5%, with thunderstorms being the primary concern. The atmospheric pressure averages 1014.5 hPa, typical for coastal areas during summer.

Daylight hours are ample in August. Sunrise occurs around 6:41 AM, while sunset takes place at approximately 8:18 PM, providing extended periods of natural light for enjoying Charleston’s outdoor attractions and historic sites.

What is the temperature in Charleston in August?

Average air temperature in Charleston is 22.7°C (72.9°F) in August. The outside temperature in Charleston feels like 23°C (73.4°F) on a typical August day. The highest average temperature during sunny days is 28°C (82.5°F) and feels like 29°C (84.2°F). The lowest average temperature after dark is 18.3°C (64.9°F) which feels like 18.3°C (64.9°F).

Daily Temperature in Charleston in August 0°C / 32.0°F 10°C / 50.0°F 20°C / 68.0°F 30°C / 86.0°F 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

How hot is Charleston in August?

The hot temperature in August in Charleston rises to 32.8°C (91°F) on sunny days with low cloud coverage and 81.6% humidity. During hottest days of August it feels like 35.6 °C (96.1°F). The average maximum temp in Charleston is 28°C (96.1°F) during day time in August.

How cold is Charleston in August?

The coldest temp in Charleston in August drops to 11.7°C (53.1°F) during the cold nights. With 15.4km/h (9.6mph) winds and 81.6% humidity it feels like 11.7°C (53.1°F) on the coldest nights. The average minimum temperature is 18.3°C (64.9°F) during night time in August.

Does it rain in Charleston in August?

Yes, it rains for 17 days in Charleston, United States in August averaging 3.31 mm of precipitation. Charleston has a 54.8% chance for rain throughout the entire month of August.

How much does it rain in Charleston throughout August?

Charleston has 3.31 mm (0.13 inch) of rain per day on average in August. It rains for an average of 17 days out of the entire month.

Is Charleston windy in August?

The average speed of wind in Charleston, United States during August is 15.4km/h (9.6mph) and average windgust is 28.1km/h (17.5mph). On some days in August wind can reach up to 38.7km/h (24mph).

Daily wind speed in Charleston in August 0km/h (0mph) 10km/h (6mph) 20km/h (12mph) 30km/h (19mph) 40km/h (25mph) 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

What is the direction of the wind in Charleston in August?

Most days of August the wind is blowing from South direction in Charleston.

What are the humidity levels in Charleston in August?

The average humidity levels in Charleston in August are 81.6%. Daily humidity levels in Charleston range from 67.6% to 94.7% during August.

Daily humidity levels in Charleston in August 0% 24% 48% 72% 96% 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

How many hours of daylight are in Charleston in August?

Charleston has 13 hours 36 minutes of daylight in August on average. Sunset and sunrise times gradually change throughout the month. Sunrise in Charleston in August is at 6:41:48 and the sunset is at 20:18:42.

What is the cloud coverage in Charleston in August?

Clouds cover 62.9% of the sky on average throughout August in Charleston. The cloud coverage ranges from 5% to 98% depending on the day of the month.

What is the UV level in August in Charleston?

The average UV index in Charleston is 5.9 in August. UV levels change throughout the month and range from 2 to 9.

What is the solar radiation in Charleston in August?

The average solar radiation is 134.2 W/m2 (Watts per square meter) in Charleston during August. However solar radiation levels change throughout the month and range from 27.1 W/m2 to 350.4 W/m2.

What is the solar energy during August in Charleston?

The average solar energy during August in Charleston is 11.6 MJ/m2 (megajoules per square metre). Solar energy ranges from 2.3 MJ/m2, to 30 MJ/m2 during August.

Are there severe weather risks in Charleston in August?

Yes, there is a 18.5% risk for severe weather in Charleston, United States in August.

What is the air pressure in Charleston in August?

On average the air pressure in Charleston in August is 1014.5 mb (millibars). Throughout the month the sea level pressure ranges from 1007.9 mb to 1021.5 mb.

What is the visibility in Charleston in August?

The average daylight visibility in Charleston in August is 13.8 km (8.6 miles). Depending on the precipitation the visibility ranges from 8.5 km (5.3 miles) to 16 km (9.9 miles) throughout August.

What is the dew point in Charleston in August?

The average dew point in Charleston during August is 18.8°C (65.9°F).

Where is the data for Charleston climate in August coming from?

The climate data for Charleston, South Carolina, United States in August is collected from the following weather stations.

  • BECKLEY RALEIGH CO AIRPORT, WV US
  • CHARLESTON YEAGER AIRPORT, WV US
  • HUNTINGTON TRI STATE AIRPORT, WV US
  • FW6696 Charleston WV US
  • FW7791 South Charleston WV US
  • KBKW
  • KCRW
  • KHTS