Weather in Washington in May 2018

  • 18°C maximum daytime temperature in May in Washington (Seattle)18
    18°C max day temperature
  • 8 hours of sunshine per day (52% of daylight hours) in May in Washington8
    8 hours of sunshine per day
  • 11 days with some rainfall in May in Washington (Seattle)11
    11 days with some rainfall
  • 8°C minimum night-time temperature in May in Washington (Seattle)8
    8°C min night temperature
  • 15 hours of daylight per day in May in Washington (Seattle)15
    15 hours of daylight per day
  • No heat & humidity in May in Washington (Seattle)0
    No heat & humidity
  • 46 mm monthly rainfall in May in Washington (Seattle)46
    46 mm of monthly rainfall
  • UV (maximum) index 6 (High) in May in Washington (Seattle)6
    6 (High) UV index

Expect 18°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Washington in May. Check more long-term weather averages for Washington in May before you book your next holiday to Washington in 2018. The May weather averages shown above are for Seattle.

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Guide to Washington weather in May

The average maximum daytime temperature in Washington in May is a comfortable 18°C (64°F). The average night-time temperature is usually a cool 8°C (46°F). There are usually 8 hours of bright sunshine each day, which represents 52% of the 15 hours of daylight.

Expect 46mm (1.8 inches) of rainfall across the whole of May with 11 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 May is represented by Seattle.

Washington sunrise & sunset times for May 2018

Browse the sunrise & sunset times for Washington in May 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
Tuesday, 1st May 2018 05:52 20:22
Wednesday, 2nd May 2018 05:50 20:23
Thursday, 3rd May 2018 05:49 20:24
Friday, 4th May 2018 05:47 20:26
Saturday, 5th May 2018 05:46 20:27
Sunday, 6th May 2018 05:44 20:29
Monday, 7th May 2018 05:43 20:30
Tuesday, 8th May 2018 05:41 20:31
Wednesday, 9th May 2018 05:40 20:33
Thursday, 10th May 2018 05:38 20:34
Friday, 11th May 2018 05:37 20:35
Saturday, 12th May 2018 05:36 20:37
Sunday, 13th May 2018 05:34 20:38
Monday, 14th May 2018 05:33 20:39
Tuesday, 15th May 2018 05:32 20:40
Wednesday, 16th May 2018 05:31 20:42
Thursday, 17th May 2018 05:29 20:43
Friday, 18th May 2018 05:28 20:44
Saturday, 19th May 2018 05:27 20:45
Sunday, 20th May 2018 05:26 20:47
Monday, 21st May 2018 05:25 20:48
Tuesday, 22nd May 2018 05:24 20:49
Wednesday, 23rd May 2018 05:23 20:50
Thursday, 24th May 2018 05:22 20:51
Friday, 25th May 2018 05:21 20:52
Saturday, 26th May 2018 05:20 20:53
Sunday, 27th May 2018 05:19 20:54
Monday, 28th May 2018 05:18 20:55
Tuesday, 29th May 2018 05:18 20:56
Wednesday, 30th May 2018 05:17 20:57
Thursday, 31st May 2018 05:16 20:58
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Check Washington weather for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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