Key West weather in April 2026

Q: How hot is it in Key West in April?

Daytime temperatures usually reach 27°C in Key West in April with moderate heat and humidity, falling to 20°C at night.

Q: How sunny is it in Key West in April?

There are normally 10 hours of bright sunshine each day in Key West in April - that's 76% of daylight hours.

Q: How warm is the sea around Key West in April?

The average sea temperature around Key West in April is 25°C.

Q: Does it rain in Key West in April?

There are usually 5 days with some rain in Key West in April and the average monthly rainfall is 68mm.

Expect daytime maximum temperatures of 28°C in Key West, Florida in April based on long-term weather averages. There are 11 hours of sunshine per day on average with typically 46 mm of rainfall in the month.

28
28°C max day temperature
11
11 hours of sunshine per day
4
4 days with some rainfall
21
21°C min night temperature
13
13 hours of daylight per day
M
Moderate heat & humidity
46
46 mm of monthly rainfall
11
11 (Extreme) UV index
25
25°C sea temperature

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The April 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)