Washington weather in August 2019

  • 30°C maximum daytime temperature in August in Washington30
    30°C max day temperature
  • 8 hours of sunshine per day
  • 9 days with some rainfall in August in Washington9
    9 days with some rainfall
  • 20°C minimum night-time temperature in August in Washington20
    20°C min night temperature
  • 14 hours of daylight per day in August in Washington14
    14 hours of daylight per day
  • High heat & humidity in August in WashingtonH
    High heat & humidity
  • 103 mm monthly rainfall in August in Washington103
    103 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Washington8
    8 (Very High) UV index
  • Top deals & discounts
  • Washington weather overview
  • Washington climate averages by month
  • More destinations
  • Best time to go to Washington
  • Washington 5-day weather forecast

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The August weather guide for Washington, D.C. shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

  • Save on holidays to the USA & Canada with Virgin Holidays
  • Holiday prices start from just £399 per person
  • Destinations include LA, New York, Boston, Miami & more

Metric (°C / mm)  |  Imperial (°F / inches)

Guide to Washington weather in August

The average maximum daytime temperature in Washington in August is a hot 30°C (86°F) with high heat & humidity. The average night-time temperature is usually a comfortable 20°C (68°F). There are usually 8 hours of bright sunshine each day, which represents 62% of the 14 hours of daylight.

Expect 103mm (4.1 inches) of rainfall across the whole of August with 9 days with some rain falling. Maximum UV levels will be very high (8 UV index) at midday when the skies are clear.

Washington sunrise & sunset times for August 2019

Browse the sunrise & sunset times for Washington in August 2019. Select a month to view Washington sunrise & sunset times for the next twelve months.


Date Sunrise times Sunset times
Thursday, 1st August 2019 06:09 20:19
Friday, 16th August 2019 06:22 20:02
Saturday, 31st August 2019 06:36 19:40
  • Check out the low fares on flights to the USA
  • Finnair flights connect in Helsinki Airport, Finland
  • Browse lowest fares available

Back to top

Discover more about the USA

More D.C. destinations

All D.C. destinations >>

Related posts

Popular travel offers

Top ^