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
Vienna experiences a minor change to a still moderately hot 82.8°F (28.2°C) in average high-temperature during August, closely reflecting July. During August, the nighttime temperature averages to an agreeable 68°F (20°C).Heat index
Throughout August, the heat index is estimated at a hot 91.4°F (33°C). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.When referencing the heat index, its values are suitable for shady environments and light breezes. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gives an indication of how one might feel in terms of heat after considering humidity. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
May, August and September, with an average relative humidity of 80%, are the most humid months in Vienna.Rainfall
In Vienna, in August, it is raining for 12.6 days, with typically 1.42" (36mm) of accumulated precipitation. In Vienna, during the entire year, the rain falls for 114.4 days and collects up to 12.05" (306mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in August in Vienna is 13h and 37min.On the first day of the month, sunrise is at 6:05 am and sunset at 8:13 pm. On the last day of August, sunrise is at 6:32 am and sunset at 7:34 pm EDT.
Sunshine
In August, the average sunshine is 10.3h.UV index
The months with the highest UV index in Vienna, Maryland, are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 6 during August translates into the following guidance:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Frequently asked questions
Is it hot in Vienna during August?
What is the most humid month in Vienna?
What is the average humidity in August in Vienna?
How many days does it rain in August in Vienna?
When it does not snow in Vienna?
How many hours of daylight does Vienna have in August?
When is the sunrise / sunset in August in Vienna?
How long on average sun shines in August in Vienna?
What are the months with the highest UV index in Vienna?
How high is the UV index in August in Vienna?
Average temperature in August
Vienna, MD
- Average high temperature in August: 82.8°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (42.1°F).
- Average low temperature in August: 68°F
The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).
Average pressure in August
Vienna, MD
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in August
Vienna, MD
- Average wind speed in August: 6.1mph
The windiest month (with the highest average wind speed) is February (9.7mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in August
Vienna, MD
- Average humidity in August: 80%
The months with the highest relative humidity are May, August and September (80%).
The months with the lowest relative humidity are January, February, March and April (75%).
Average rainfall in August
Vienna, MD
- Average rainfall in August: 1.42"
The wettest month (with the highest rainfall) is July (1.46").
The driest months (with the least rainfall) are April and May (0.79").
Average rainfall days in August
Vienna, MD
- Average rainfall days in August: 12.6 days
The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is November (6.5 days).
Average snowfall in August
Vienna, MD
- Average snowfall in August: 0"
The month with the highest snowfall is January (0.75").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Vienna, MD
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (3.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Vienna, MD
- 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 2min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).
Average sunshine days in August
Vienna, MD
- Average sunshine days in August: 15.1 days
The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is July (14.7 days).
Average UV index in August
Vienna, MD
- 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 and December (UV index 2).
Average cloud cover in August
Vienna, MD
- Average cloud cover in August: 29
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in August
Vienna, MD
- 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).
Vienna, Maryland, USA
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