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
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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.

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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.

JanFebMarAprMayJunJulAugSepOctNovDec

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
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