Weather in D.C. in August 2019

  • 30°C maximum daytime temperature in August in D.C. (Washington)30
    30°C max day temperature
  • 8 hours of sunshine per day (62% of daylight hours) in August in D.C.8
    8 hours of sunshine per day
  • 9 days with some rainfall in August in D.C. (Washington)9
    9 days with some rainfall
  • 20°C minimum night-time temperature in August in D.C. (Washington)20
    20°C min night temperature
  • 14 hours of daylight per day in August in D.C. (Washington)14
    14 hours of daylight per day
  • High heat & humidity in August in D.C. (Washington)H
    High heat & humidity
  • 103 mm monthly rainfall in August in D.C. (Washington)103
    103 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in D.C. (Washington)8
    8 (Very High) UV index

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Expect 30°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in D.C. in August. Check more long-term weather averages for D.C. in August before you book your next holiday to D.C. in 2019/2020. The August weather averages shown above are for Washington.

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More about D.C.

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The August weather guide for D.C., represented by Washington, 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.

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

Guide to D.C. weather in August

The average maximum daytime temperature in D.C. 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.

The weather in D.C. in August is represented by Washington.

D.C. sunrise & sunset times for August 2019

Browse the sunrise & sunset times for D.C. in August 2019. Select a month to view D.C. sunrise & sunset times for the next twelve months. The D.C. sunrise & sunset times shown below are for Washington.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st August 2019 06:09 20:19
Friday, 2nd August 2019 06:10 20:18
Saturday, 3rd August 2019 06:11 20:17
Sunday, 4th August 2019 06:11 20:16
Monday, 5th August 2019 06:12 20:15
Tuesday, 6th August 2019 06:13 20:14
Wednesday, 7th August 2019 06:14 20:13
Thursday, 8th August 2019 06:15 20:12
Friday, 9th August 2019 06:16 20:11
Saturday, 10th August 2019 06:17 20:09
Sunday, 11th August 2019 06:18 20:08
Monday, 12th August 2019 06:19 20:07
Tuesday, 13th August 2019 06:20 20:06
Wednesday, 14th August 2019 06:20 20:04
Thursday, 15th August 2019 06:21 20:03
Friday, 16th August 2019 06:22 20:02
Saturday, 17th August 2019 06:23 20:00
Sunday, 18th August 2019 06:24 19:59
Monday, 19th August 2019 06:25 19:58
Tuesday, 20th August 2019 06:26 19:56
Wednesday, 21st August 2019 06:27 19:55
Thursday, 22nd August 2019 06:28 19:54
Friday, 23rd August 2019 06:29 19:52
Saturday, 24th August 2019 06:30 19:51
Sunday, 25th August 2019 06:30 19:49
Monday, 26th August 2019 06:31 19:48
Tuesday, 27th August 2019 06:32 19:46
Wednesday, 28th August 2019 06:33 19:45
Thursday, 29th August 2019 06:34 19:43
Friday, 30th August 2019 06:35 19:42
Saturday, 31st August 2019 06:36 19:40
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