August weather forecast
Colonial Beach, VA

Weather in August

August, the last month of the summer, in Colonial Beach, is another warm month, with average temperature fluctuating between 67.8°F (19.9°C) and 85.5°F (29.7°C).

Temperature

In Colonial Beach, the average high-temperature is practically the same as in July - a moderately hot 85.5°F (29.7°C). The average low-temperature, in August, is 67.8°F (19.9°C).

Heat index

The average heat index is estimated at a sweltering 95.9°F (35.5°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. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like activity, pregnancy, clothing, and wind affect individual temperature impact. 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. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Colonial Beach, Virginia, the average relative humidity is 75%.

Rainfall

The wettest months in Colonial Beach are July and August, with an average 3.19" (81mm) of rainfall.

Snowfall

May through October are months without snowfall.

Ocean temperature

August is the month with the warmest seawater, with an average ocean temperature of 78.4°F (25.8°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The average length of the day in August is 13.6h.

Sunshine

The average sunshine is 10.1h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Colonial Beach, Virginia. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation for the ordinary person.
Note: In August, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in August in Colonial Beach?

In Colonial Beach, in August, the average high-temperature is 85.5°F (29.7°C), and the average low-temperature is 67.8°F (19.9°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in August is estimated at 95.9°F (35.5°C).

What is the average humidity in August in Colonial Beach?

In Colonial Beach, the average relative humidity in August is 75%.

What is the wettest month in Colonial Beach?

Months with the most rainfall are July and August, with an average 3.19" (81mm) of precipitation.

How much does it rain in Colonial Beach in August?

In Colonial Beach, during August, the rain falls for 15.3 days and regularly aggregates up to 3.19" (81mm) of precipitation.

When it does not snow in Colonial Beach?

In Colonial Beach, Virginia, snow does not fall in May through October.

When is the ocean warmest in Colonial Beach?

August is the month with the warmest seawater in Colonial Beach, with an average ocean temperature of 78.4°F (25.8°C).

What is the water temperature in August in Colonial Beach?

In August, the average ocean temperature is 78.4°F (25.8°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Colonial Beach have in August?

In August, the average length of the day is 13.6h.

How long on average sun shines in August in Colonial Beach?

In August, the average sunshine in Colonial Beach is 10.1h.

What are the months with the highest UV index in Colonial Beach?

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

How high is the UV index in August in Colonial Beach?

In Colonial Beach, Virginia, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health threat from the exposure to the Sun's UV rays.

Average temperature in August
Colonial Beach, VA

Average temperature in August - Colonial Beach, VA
  • Average high temperature in August: 85.5°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (42.3°F).

  • Average low temperature in August: 67.8°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

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Average pressure in August
Colonial Beach, VA

Average pressure in August - Colonial Beach, VA
  • Average pressure in August: 29.99"

The month with the highest atmospheric pressure is November (30.14").
The month with the lowest atmospheric pressure is June (29.95").

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Average wind speed in August
Colonial Beach, VA

Average wind speed in August - Colonial Beach, VA
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is April (8mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average humidity in August
Colonial Beach, VA

Average humidity in August - Colonial Beach, VA
  • Average humidity in August: 75%

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

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Average rainfall in August
Colonial Beach, VA

Average rainfall in August - Colonial Beach, VA
  • Average rainfall in August: 3.19"

The wettest months (with the highest rainfall) are July and August (3.19").
The driest month (with the least rainfall) is September (1.97").

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Average rainfall days in August
Colonial Beach, VA

Average rainfall days in August - Colonial Beach, VA
  • Average rainfall days in August: 15.3 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (9.4 days).

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Average snowfall in August
Colonial Beach, VA

Average snowfall in August - Colonial Beach, VA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (1.85").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Colonial Beach, VA

Average snowfall days in August - Colonial Beach, VA
  • Average snowfall days in August: 0 days

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

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Average sea temperature in August
Colonial Beach, VA

Average sea temperature in August - Colonial Beach, VA
  • Average sea temperature in August: 78.4°F

The best month for swimming (with the highest average sea temperature) is August (78.4°F).
The coldest month (with the lowest average sea temperature) is February (47.1°F).

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Average daylight in August /
Average sunshine in August
Colonial Beach, VA

Average daylight in August / Average sunshine in August - Colonial Beach, VA
  • Average daylight in August: 13.6h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in August: 10.1h

The month with the most sunshine is July (Average sunshine: 10.6h).
Months with the least sunshine are February and December (Average sunshine: 5.1).

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Average sunshine days in August
Colonial Beach, VA

Average sunshine days in August - Colonial Beach, VA
  • Average sunshine days in August: 14.1 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (11.9 days).

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Average UV index in August
Colonial Beach, VA

Average UV index in August - Colonial Beach, VA
  • Average UV index in August: 6

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February and December (UV index 2).

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Average cloud cover in August
Colonial Beach, VA

Average cloud cover in August - Colonial Beach, VA
  • Average cloud cover in August: 33

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in August
Colonial Beach, VA

Average visibility in August - Colonial Beach, VA
  • Average visibility in August: 6mi

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

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