Duck Key weather in May 2025

Expect 86°F daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Duck Key in May. Check more long-term weather averages for Duck Key in May before you book your next holiday to Florida in 2025/2026.

  • 86°F maximum daytime temperature in May in Duck Key86
    86°F max day temperature
  • 11 hours of sunshine per day
  • 9 days with some rainfall in May in Duck Key9
    9 days with some rainfall
  • 70°F minimum night-time temperature in May in Duck Key70
    70°F min night temperature
  • 13 hours of daylight per day in May in Duck Key13
    13 hours of daylight per day
  • High heat & humidity in May in Duck KeyH
    High heat & humidity
  • 5.7 inches monthly rainfall in May in Duck Key5.7
    5.7 inches of monthly rainfall
  • UV (maximum) index 11 (Extreme) in May in Duck Key11
    11 (Extreme) UV index
  • 81°F sea temperature in May in Duck Key81
    81°F sea temperature

More about Duck Key

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The May 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)  |  Imperial (°F)

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More about Florida

How hot is it in Duck Key in May?

Daytime temperatures usually reach 86°F in Duck Key in May with high heat and humidity, falling to 70°F at night.

How sunny is it in Duck Key in May?

There are normally 11 hours of bright sunshine each day in Duck Key in May - that's 79% of daylight hours.

How warm is the sea around Duck Key in May?

The average sea temperature around Duck Key in May is 81°F.

Does it rain in Duck Key in May?

There are usually 9 days with some rain in Duck Key in May and the average monthly rainfall is 5.7 inches.

Duck Key May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:48 18:54
Friday, 16th May 2025 05:39 19:01
Saturday, 31st May 2025 05:34 19:09

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