Washington weather in August 2019

  • 24°C maximum daytime temperature in August in Washington (Seattle)24
    24°C max day temperature
  • 9 hours of sunshine per day
  • 6 days with some rainfall in August in Washington (Seattle)6
    6 days with some rainfall
  • 13°C minimum night-time temperature in August in Washington (Seattle)13
    13°C min night temperature
  • 14 hours of daylight per day in August in Washington (Seattle)14
    14 hours of daylight per day
  • No heat & humidity in August in Washington (Seattle)0
    No heat & humidity
  • 31 mm monthly rainfall in August in Washington (Seattle)31
    31 mm of monthly rainfall
  • UV (maximum) index 6 (High) in August in Washington (Seattle)6
    6 (High) UV index
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The August weather guide for Washington, represented by Seattle, 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 warm 24°C (75°F). The average night-time temperature is usually a cool 13°C (55°F). There are usually 9 hours of bright sunshine each day, which represents 63% of the 14 hours of daylight.

Expect 31mm (1.2 inches) of rainfall across the whole of August with 6 days with some rain falling. Maximum UV levels will be high (6 UV index) at midday when the skies are clear.

The weather in Washington in August is represented by Seattle.

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. The Washington sunrise & sunset times shown below are for Seattle.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st August 2019 05:47 20:44
Friday, 16th August 2019 06:06 20:20
Saturday, 31st August 2019 06:26 19:52
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