Key West weather in March 2025

Expect 26°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Key West in March. Check more long-term weather averages for Key West in March before you book your next holiday to Florida in 2025/2026.

  • 26°C maximum daytime temperature in March in Key West26
    26°C max day temperature
  • 10 hours of sunshine per day
  • 5 days with some rainfall in March in Key West5
    5 days with some rainfall
  • 20°C minimum night-time temperature in March in Key West20
    20°C min night temperature
  • 12 hours of daylight per day in March in Key West12
    12 hours of daylight per day
  • Low heat & humidity in March in Key WestL
    Low heat & humidity
  • 40 mm monthly rainfall in March in Key West40
    40 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in March in Key West10
    10 (Very High) UV index
  • 23°C sea temperature in March in Key West23
    23°C sea temperature

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