Duck Key weather in August 2025

Expect daytime maximum temperatures of 32°C in Duck Key, Florida in August and very high heat and humidity based on long-term weather averages. There are 10 hours of sunshine per day on average with 15 days with some rainfall and typically 177 mm of rainfall in the month.

  • 32°C maximum daytime temperature in August in Duck Key32
    32°C max day temperature
  • 10 hours of sunshine per day
  • 15 days with some rainfall in August in Duck Key15
    15 days with some rainfall
  • 23°C minimum night-time temperature in August in Duck Key23
    23°C min night temperature
  • 13 hours of daylight per day in August in Duck Key13
    13 hours of daylight per day
  • Very high heat & humidity in August in Duck KeyVH
    Very High heat & humidity
  • 177 mm monthly rainfall in August in Duck Key177
    177 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in August in Duck Key11
    11 (Extreme) UV index
  • 30°C sea temperature in August in Duck Key30
    30°C sea temperature

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The August weather guide for Florida (Duck Key) 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)

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More about Florida

How hot is it in Duck Key in August?

Daytime temperatures usually reach 32°C in Duck Key in August with very high heat and humidity, falling to 23°C at night.

How sunny is it in Duck Key in August?

There are normally 10 hours of bright sunshine each day in Duck Key in August - that's 73% of daylight hours.

How warm is the sea around Duck Key in August?

The average sea temperature around Duck Key in August is 30°C.

Does it rain in Duck Key in August?

There are usually 15 days with some rain in Duck Key in August and the average monthly rainfall is 177mm.

What is the chance of a hurricane in Duck Key in August?

On average less than 1 day in August in Duck Key is likely to be affected by the passage of one or more tropical storms.

Duck Key August sunrise & sunset times

Browse the sunrise and sunset times for Duck Key in August 2025. Select a month to view Duck Key sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:52 19:08
Saturday, 16th August 2025 05:59 18:57
Sunday, 31st August 2025 06:04 18:43

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