Weather in Key West in May 2018

Expect 29°C daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Key West in May. Check more long-term weather averages for Key West in May before you book your next holiday to Florida in 2018.

Key weather averages for Key West in May

  • 29°C maximum daytime temperature in May in Key West29
    29°C max day temperature
  • 11 hours of sunshine per day (79% of daylight hours) in May in Key West11
    11 hours of sunshine per day
  • 8 days with some rainfall in May in Key West8
    8 days with some rainfall
  • 23°C minimum night-time temperature in May in Key West23
    23°C min night temperature
  • 13 hours of daylight per day in May in Key West13
    13 hours of daylight per day
  • High heat & humidity in May in Key WestH
    High heat & humidity
  • 107 mm monthly rainfall in May in Key West107
    107 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in May in Key West11
    11 (Extreme) UV index
  • 27°C sea temperature in May in Key West27
    27°C sea temperature

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All months

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

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More about Key West

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Guide to Key West weather in May

The average maximum daytime temperature in Key West in May is a warm 29°C (84°F) with high heat & humidity. The average night-time temperature is usually a warm 23°C (73°F). There are usually 11 hours of bright sunshine each day, which represents 79% of the 13 hours of daylight.

Expect 107mm (4.2 inches) of rainfall across the whole of May with 8 days with some rain falling. Maximum UV levels will be extreme (11 UV index) at midday when the skies are clear.

The average sea temperature in and around Key West in May is 27°C (81°F).

The weather in Key West in May is represented by Key West.

Key West sunrise & sunset times for May 2018

Browse the sunrise & sunset times for Key West in May 2018. Select a month to view Key West sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st May 2018 06:52 19:57
Wednesday, 2nd May 2018 06:51 19:57
Thursday, 3rd May 2018 06:51 19:58
Friday, 4th May 2018 06:50 19:58
Saturday, 5th May 2018 06:49 19:59
Sunday, 6th May 2018 06:49 19:59
Monday, 7th May 2018 06:48 20:00
Tuesday, 8th May 2018 06:47 20:00
Wednesday, 9th May 2018 06:47 20:01
Thursday, 10th May 2018 06:46 20:01
Friday, 11th May 2018 06:46 20:02
Saturday, 12th May 2018 06:45 20:02
Sunday, 13th May 2018 06:45 20:03
Monday, 14th May 2018 06:44 20:03
Tuesday, 15th May 2018 06:44 20:04
Wednesday, 16th May 2018 06:43 20:04
Thursday, 17th May 2018 06:43 20:05
Friday, 18th May 2018 06:42 20:05
Saturday, 19th May 2018 06:42 20:06
Sunday, 20th May 2018 06:41 20:06
Monday, 21st May 2018 06:41 20:07
Tuesday, 22nd May 2018 06:41 20:07
Wednesday, 23rd May 2018 06:40 20:08
Thursday, 24th May 2018 06:40 20:08
Friday, 25th May 2018 06:40 20:09
Saturday, 26th May 2018 06:39 20:09
Sunday, 27th May 2018 06:39 20:10
Monday, 28th May 2018 06:39 20:10
Tuesday, 29th May 2018 06:39 20:11
Wednesday, 30th May 2018 06:39 20:11
Thursday, 31st May 2018 06:38 20:11
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  • Depart from Manchester Airport (MAN)
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Key West weather by month

Check Key West 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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