August weather forecast
Irmo, SC

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Weather in August

August maintains the trend of high temperatures though there is a slight relief from the heat compared to July. The weather is still largely warm, characterized by long, sunny days inviting for dips in the pool or lounging by the beach. August also sees the highest rainfall of the year at 2.87" (73mm), providing the region with much-needed hydration. With the end of August, visitors bid adieu to the peak summer season. As September rolls in, there'll be a noticeable drop in temperatures, indicating the beginning of the fall season.

Temperature

July's transformation into August witnesses an average high-temperature of a still tropical 90°F (32.2°C) in Irmo, noting a minor change from the preceding month. Throughout the month of August, Irmo witnesses an average temperature of 71.6°F (22°C).

Heat index

For most parts of August, the heat index is estimated at a blistering 105.8°F (41°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

In August, the average relative humidity in Irmo is 71%.

Rainfall

In Irmo, South Carolina, in August, during 16 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. In Irmo, during the entire year, the rain falls for 147.8 days and collects up to 28.23" (717mm) of precipitation.

Snowfall

April through November are months without snowfall.

Daylight

The average length of the day in August in Irmo is 13h and 23min.
On the first day of August, sunrise is at 6:36 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 7:51 pm EDT.

Sunshine

The average sunshine in August in Irmo is 10.4h.

UV index

In August, the average daily maximum UV index in Irmo, South Carolina, is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.
Note: In August, the UV index of 6 transforms into the following advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
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Frequently asked questions

How hot does it get in Irmo in August?

During August, Irmo experiences an average high-temperature of 90°F (32.2°C) and a low-temperature of 71.6°F (22°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is estimated at 105.8°F (41°C).

What is the average humidity in August in Irmo?

The average relative humidity in August is 71%.

How much does it rain in Irmo in August?

In Irmo, in August, it is raining for 16 days, with typically 2.87" (73mm) of accumulated precipitation.

When it does not snow in Irmo?

April through November are months without snowfall in Irmo.

How many hours of daylight does Irmo have in August?

In Irmo, South Carolina, the average day length in August is 13h and 23min.

When are sunrise and sunset in August in Irmo?

On the first day of August, sunrise is at 6:36 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 7:51 pm EDT.

How many hours of sunshine does Irmo have in August?

In Irmo, South Carolina, the average sunshine duration in August is 10.4h.

What is the UV index intensity in August in Irmo?

The average daily maximum UV index in August in Irmo, South Carolina, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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
Irmo, SC

Average temperature in August - Irmo, SC
  • Average high temperature in August: 90°F

The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (52.3°F).

  • Average low temperature in August: 71.6°F

The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).

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Average pressure in August
Irmo, SC

Average pressure in August - Irmo, SC
  • Average pressure in August: 29.99"Hg

The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

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Average wind speed in August
Irmo, SC

Average wind speed in August - Irmo, SC
  • Average wind speed in August: 5.3mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in August
Irmo, SC

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

The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is July (70%).

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Average rainfall in August
Irmo, SC

Average rainfall in August - Irmo, SC
  • Average rainfall in August: 2.87"

The wettest month (with the highest rainfall) is December (3.11").
The driest month (with the least rainfall) is September (1.54").

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Average rainfall days in August
Irmo, SC

Average rainfall days in August - Irmo, SC
  • Average rainfall days in August: 16 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is October (7.8 days).

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Average snowfall in August
Irmo, SC

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

The month with the highest snowfall is February (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in August
Irmo, SC

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

The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 24min).
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: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in August
Irmo, SC

Average sunshine days in August - Irmo, SC
  • Average sunshine days in August: 12.9 days

The month with the most sunshine days is October (21.8 days).
The month with the least sunshine days is July (10.8 days).

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Average UV index in August
Irmo, SC

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

The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).

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Average cloud cover in August
Irmo, SC

Average cloud cover in August - Irmo, SC
  • Average cloud cover in August: 31

The months with the most cloud cover are February and December (Cloud cover 41).
The months with the least cloud cover are June and October (Cloud cover 28).

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Average visibility in August
Irmo, SC

Average visibility in August - Irmo, 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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Irmo, South Carolina, USA

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