Key Largo weather in May 2025

Expect 86°F daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Key Largo in May. Check more long-term weather averages for Key Largo in May before you book your next holiday to Florida in 2025/2026.

  • 86°F maximum daytime temperature in May in Key Largo86
    86°F max day temperature
  • 10 hours of sunshine per day
  • 10 days with some rainfall in May in Key Largo10
    10 days with some rainfall
  • 70°F minimum night-time temperature in May in Key Largo70
    70°F min night temperature
  • 13 hours of daylight per day in May in Key Largo13
    13 hours of daylight per day
  • High heat & humidity in May in Key LargoH
    High heat & humidity
  • 6.6 inches monthly rainfall in May in Key Largo6.6
    6.6 inches of monthly rainfall
  • UV (maximum) index 11 (Extreme) in May in Key Largo11
    11 (Extreme) UV index
  • 81°F sea temperature in May in Key Largo81
    81°F sea temperature

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The May weather guide for Florida (Key Largo) 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 Key Largo in May?

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

How sunny is it in Key Largo in May?

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

How warm is the sea around Key Largo in May?

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

Does it rain in Key Largo in May?

There are usually 10 days with some rain in Key Largo in May and the average monthly rainfall is 6.6 inches.

Key Largo May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:46 18:52
Friday, 16th May 2025 05:37 19:00
Saturday, 31st May 2025 05:32 19:07

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