Key West weather in August 2019

  • 32°C maximum daytime temperature in August in Key West32
    32°C max day temperature
  • 10 hours of sunshine per day (74% of daylight hours) in August in Key West10
    10 hours of sunshine per day
  • 15 days with some rainfall in August in Key West15
    15 days with some rainfall
  • 26°C minimum night-time temperature in August in Key West26
    26°C min night temperature
  • 13 hours of daylight per day in August in Key West13
    13 hours of daylight per day
  • Very high heat & humidity in August in Key WestVH
    Very High heat & humidity
  • 125 mm monthly rainfall in August in Key West125
    125 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in August in Key West11
    11 (Extreme) UV index
  • 30°C sea temperature in August in Key West30
    30°C sea temperature

Going to Key West? Find the best month to visit Key West based on the weather.

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Expect 32°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Key West in August. Check more long-term weather averages for Key West in August before you book your next holiday to Florida in 2019/2020.

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More about Key West

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The August weather guide for Key West, Florida 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 Key West weather in August

The average maximum daytime temperature in Key West in August is a hot 32°C (90°F) with very high heat & humidity. The average night-time temperature is usually a warm 26°C (79°F). There are usually 10 hours of bright sunshine each day, which represents 74% of the 13 hours of daylight.

Expect 125mm (4.9 inches) of rainfall across the whole of August with 15 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 August is 30°C (86°F).

Key West sunrise & sunset times for August 2019

Browse the sunrise & sunset times for Key West in August 2019. Select a month to view Key West sunrise & sunset times for the next twelve months.


Date Sunrise times Sunset times
Thursday, 1st August 2019 06:55 20:11
Friday, 2nd August 2019 06:56 20:11
Saturday, 3rd August 2019 06:56 20:10
Sunday, 4th August 2019 06:57 20:09
Monday, 5th August 2019 06:57 20:09
Tuesday, 6th August 2019 06:58 20:08
Wednesday, 7th August 2019 06:58 20:07
Thursday, 8th August 2019 06:59 20:07
Friday, 9th August 2019 06:59 20:06
Saturday, 10th August 2019 06:59 20:05
Sunday, 11th August 2019 07:00 20:04
Monday, 12th August 2019 07:00 20:04
Tuesday, 13th August 2019 07:01 20:03
Wednesday, 14th August 2019 07:01 20:02
Thursday, 15th August 2019 07:02 20:01
Friday, 16th August 2019 07:02 20:00
Saturday, 17th August 2019 07:02 20:00
Sunday, 18th August 2019 07:03 19:59
Monday, 19th August 2019 07:03 19:58
Tuesday, 20th August 2019 07:04 19:57
Wednesday, 21st August 2019 07:04 19:56
Thursday, 22nd August 2019 07:04 19:55
Friday, 23rd August 2019 07:05 19:54
Saturday, 24th August 2019 07:05 19:53
Sunday, 25th August 2019 07:06 19:53
Monday, 26th August 2019 07:06 19:52
Tuesday, 27th August 2019 07:06 19:51
Wednesday, 28th August 2019 07:07 19:50
Thursday, 29th August 2019 07:07 19:49
Friday, 30th August 2019 07:07 19:48
Saturday, 31st August 2019 07:08 19:47
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Below are average maximum temperatures at popular destinations in Florida in August. Select a destination to see more weather parameters.

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