Key West weather in March 2026

Expect daytime maximum temperatures of 26°C in Key West, Florida in March based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 40 mm of rainfall in the month.

  • 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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The March weather guide for Florida (Key West) 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 Key West in March?

Daytime temperatures usually reach 26°C in Key West in March with low heat and humidity, falling to 20°C at night.

How sunny is it in Key West in March?

There are normally 10 hours of bright sunshine each day in Key West in March - that's 81% of daylight hours.

How warm is the sea around Key West in March?

The average sea temperature around Key West in March is 23°C.

Does it rain in Key West in March?

There are usually 5 days with some rain in Key West in March and the average monthly rainfall is 40mm.

Key West March sunrise & sunset times

Browse the sunrise and sunset times for Key West in March 2026. Select a month to view Key West sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st March 2026 06:49 18:30
Monday, 16th March 2026 06:35 18:37
Tuesday, 31st March 2026 06:20 18:43

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