Weather in Washington in August 2018

  • 24°C maximum daytime temperature in August in Washington (Seattle)24
    24°C max day temperature
  • 9 hours of sunshine per day (63% of daylight hours) in August in Washington9
    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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Expect 24°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Washington in August. Check more long-term weather averages for Washington in August before you book your next holiday to Washington in 2018. The August weather averages shown above are for Seattle.

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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 2018

Browse the sunrise & sunset times for Washington in August 2018. 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
Wednesday, 1st August 2018 05:47 20:44
Thursday, 2nd August 2018 05:48 20:42
Friday, 3rd August 2018 05:50 20:41
Saturday, 4th August 2018 05:51 20:39
Sunday, 5th August 2018 05:52 20:38
Monday, 6th August 2018 05:53 20:36
Tuesday, 7th August 2018 05:55 20:35
Wednesday, 8th August 2018 05:56 20:33
Thursday, 9th August 2018 05:57 20:31
Friday, 10th August 2018 05:59 20:30
Saturday, 11th August 2018 06:00 20:28
Sunday, 12th August 2018 06:01 20:26
Monday, 13th August 2018 06:03 20:25
Tuesday, 14th August 2018 06:04 20:23
Wednesday, 15th August 2018 06:05 20:21
Thursday, 16th August 2018 06:07 20:20
Friday, 17th August 2018 06:08 20:18
Saturday, 18th August 2018 06:09 20:16
Sunday, 19th August 2018 06:11 20:14
Monday, 20th August 2018 06:12 20:12
Tuesday, 21st August 2018 06:13 20:11
Wednesday, 22nd August 2018 06:15 20:09
Thursday, 23rd August 2018 06:16 20:07
Friday, 24th August 2018 06:17 20:05
Saturday, 25th August 2018 06:19 20:03
Sunday, 26th August 2018 06:20 20:01
Monday, 27th August 2018 06:21 19:59
Tuesday, 28th August 2018 06:23 19:57
Wednesday, 29th August 2018 06:24 19:55
Thursday, 30th August 2018 06:25 19:53
Friday, 31st August 2018 06:27 19:51
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