Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
A minimal variation is noted in Washington's average high-temperature at the onset of August, reaching a still moderately hot 83.1°F (28.4°C) from July's 85.6°F (29.8°C). In August, a remarkable difference from daytime highs is noted, as Washington records an average temperature of 61.3°F (16.3°C) during the night.Heat index
Throughout August, the heat index is computed to be a tropical 89.6°F (32°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Humidity
The average relative humidity in August in Washington is 76%.Rainfall
In Washington, in August, it is raining for 17.8 days, with typically 2.56" (65mm) of accumulated precipitation. In Washington, during the entire year, the rain falls for 146.8 days and collects up to 21.02" (534mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in August is 13h and 38min.On the first day of August in Washington, sunrise is at 6:14 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 7:43 pm EDT.
Sunshine
In Washington, the average sunshine in August is 10.2h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 6 during August translates into the following directions:
Inhibit overexposure. Warding off sun damage is of utmost importance. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
How hot is it in Washington in August?
What is the average humidity in August in Washington?
How many days does it rain in August in Washington?
When it does not snow in Washington?
What is the average length of the day in August in Washington?
When is the sunrise / sunset in August in Washington?
How long on average sun shines in August in Washington?
What are the months with the highest UV index in Washington?
What is the UV index reading in August in Washington?
Average temperature in August
Washington, VA
- Average high temperature in August: 83.1°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 (62.6°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in August
Washington, VA
- Average pressure in August: 30"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in August
Washington, VA
- Average wind speed in August: 4.1mph
The windiest months (with the highest average wind speed) are February and March (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in August
Washington, VA
- Average humidity in August: 76%
The month with the highest relative humidity is October (79%).
The months with the lowest relative humidity are April and July (74%).
Average rainfall in August
Washington, VA
- Average rainfall in August: 2.56"
The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in August
Washington, VA
- Average rainfall days in August: 17.8 days
The month with the highest number of rainy days is August (17.8 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in August
Washington, VA
- Average snowfall in August: 0"
The month with the highest snowfall is March (2.56").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Washington, VA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Washington, VA
- Average daylight in August: 13h and 4min
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 30min).
- 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 6min).
Average sunshine days in August
Washington, VA
- Average sunshine days in August: 11.4 days
The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is August (11.4 days).
Average UV index in August
Washington, 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
Washington, 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).
Average visibility in August
Washington, VA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, April, June, July, August and November (6mi).
The months with the lowest visibility are March, May, September, October and December (5mi).
Washington, Virginia, USA
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