Weather in Key West in August 2018

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 2018.

Key weather averages for Key West in August

  • 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

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

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

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Expires at 23:59 on Wednesday 18th October 2017

More about Key West

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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).

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

Key West sunrise & sunset times for August 2018

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st August 2018 06:56 20:11
Thursday, 2nd August 2018 06:56 20:10
Friday, 3rd August 2018 06:56 20:10
Saturday, 4th August 2018 06:57 20:09
Sunday, 5th August 2018 06:57 20:09
Monday, 6th August 2018 06:58 20:08
Tuesday, 7th August 2018 06:58 20:07
Wednesday, 8th August 2018 06:59 20:06
Thursday, 9th August 2018 06:59 20:06
Friday, 10th August 2018 07:00 20:05
Saturday, 11th August 2018 07:00 20:04
Sunday, 12th August 2018 07:00 20:04
Monday, 13th August 2018 07:01 20:03
Tuesday, 14th August 2018 07:01 20:02
Wednesday, 15th August 2018 07:02 20:01
Thursday, 16th August 2018 07:02 20:00
Friday, 17th August 2018 07:02 19:59
Saturday, 18th August 2018 07:03 19:59
Sunday, 19th August 2018 07:03 19:58
Monday, 20th August 2018 07:04 19:57
Tuesday, 21st August 2018 07:04 19:56
Wednesday, 22nd August 2018 07:05 19:55
Thursday, 23rd August 2018 07:05 19:54
Friday, 24th August 2018 07:05 19:53
Saturday, 25th August 2018 07:06 19:52
Sunday, 26th August 2018 07:06 19:51
Monday, 27th August 2018 07:06 19:50
Tuesday, 28th August 2018 07:07 19:49
Wednesday, 29th August 2018 07:07 19:48
Thursday, 30th August 2018 07:08 19:47
Friday, 31st August 2018 07:08 19:46
  • Get FREE dining & drinks on Walt Disney World 2018 holidays
  • Plus $100 spending money & 14-day pass for price of 7
  • FREE Memory Maker (worth $199) & DisneyLife subscription

Expires at 23:59 on Wednesday 18th October 2017

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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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