August weather forecast
Big Island, VA

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Weather in August

The last month of the summer, August, is another warm month in Big Island, Virginia, with an average temperature fluctuating between 84°F (28.9°C) and 60.4°F (15.8°C).

Temperature

August's average high-temperature is a still warm 84°F (28.9°C), maintaining a close comparison with July's 85.8°F (29.9°C). August presents a pronounced divergence from daily peak temperatures, with the average low-temperature of 60.4°F (15.8°C).

Heat index

The average heat index in August is computed to be a hot 91.4°F (33°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', gives a temperature feeling by integrating air temperature and humidity. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.

Humidity

The average relative humidity in August is 75%.

Rainfall

In Big Island, in August, it is raining for 15.3 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, there are 146.4 rainfall days, and 23.86" (606mm) of precipitation is accumulated.

Snowfall

In Big Island, snow does not fall in May through October.

Daylight

The average length of the day in August in Big Island is 13h and 34min.
On the first day of the month, sunrise is at 6:22 am and sunset at 8:25 pm. On the last day of August, sunrise is at 6:47 am and sunset at 7:47 pm EDT.

Sunshine

The average sunshine in August is 10.2h.

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 vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In August, the UV index of 6 transforms into the following advice:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

In August, in Big Island, the average high-temperature is 84°F (28.9°C), and the average low-temperature is 60.4°F (15.8°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is computed to be 91.4°F (33°C).

What is the average humidity in August?

In August, the average relative humidity is 75%.

How many days does it rain in August?

In Big Island, in August, during 15.3 rainfall days, 2.24" (57mm) of precipitation is typically accumulated.

When it does not snow?

May through October are months without snowfall.

How many hours of daylight does Big Island have in August?

In Big Island, Virginia, the average day length in August is 13h and 34min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:22 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 7:47 pm EDT.

How long on average sun shines in August?

The average sunshine duration in August in Big Island is 10.2h.

What is the month with the highest UV index?

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

What is the UV index reading in August in Big Island?

The average daily maximum UV index in August 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Big Island, VA

Average temperature in August - Big Island, VA
  • Average high temperature in August: 84°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (40.6°F).

  • Average low temperature in August: 60.4°F

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

Average pressure in August
Big Island, VA

Average pressure in August - Big Island, VA
  • 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 (29.97"Hg).

Average wind speed in August
Big Island, VA

Average wind speed in August - Big Island, VA
  • Average wind speed in August: 3.9mph

The windiest months (with the highest average wind speed) are February and April (6.3mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

Average humidity in August
Big Island, VA

Average humidity in August - Big Island, VA
  • Average humidity in August: 75%

The months with the highest relative humidity are May and December (78%).
The month with the lowest relative humidity is July (73%).

Average rainfall in August
Big Island, VA

Average rainfall in August - Big Island, VA
  • Average rainfall in August: 2.24"

The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days in August
Big Island, VA

Average rainfall days in August - Big Island, VA
  • Average rainfall days in August: 15.3 days

The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is November (7.9 days).

Average snowfall in August
Big Island, VA

Average snowfall in August - Big Island, VA
  • Average snowfall in August: 0"

The month with the highest snowfall is March (2.2").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Big Island, VA

Average snowfall days in August - Big Island, VA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Big Island, VA

Average daylight in August / Average sunshine in August - Big Island, VA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in August
Big Island, VA

Average sunshine days in August - Big Island, VA
  • Average sunshine days in August: 13.4 days

The month with the most sunshine days is November (21.4 days).
The month with the least sunshine days is May (9.8 days).

Average UV index in August
Big Island, VA

Average UV index in August - Big Island, 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, November and December (UV index 2).

Average cloud cover in August
Big Island, VA

Average cloud cover in August - Big Island, VA
  • Average cloud cover in August: 33

The month with the most cloud cover is March (Cloud cover 45).
The months with the least cloud cover are June and July (Cloud cover 30).

Average visibility in August
Big Island, VA

Average visibility in August - Big Island, VA
  • Average visibility in August: 5mi

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

Big Island, Virginia, USA

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