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
  • 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
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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.

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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.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st August 2019 06:55 20:11
Friday, 16th August 2019 07:02 20:00
Saturday, 31st August 2019 07:08 19:47
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Where's hot in Florida in August?

Below are average maximum temperatures at popular destinations in Florida in August. Select a destination to see more weather parameters.

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