Key West weather in April 2020

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The April weather guide for Key West, Florida 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.

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Metric (°C / mm) | Imperial (°F / inches)

Guide to Key West weather in April

The average maximum daytime temperature in Key West in April is a warm 28°C (82°F) with moderate heat & humidity. The average night-time temperature is usually a comfortable 21°C (70°F). There are usually 11 hours of bright sunshine each day, which represents 83% of the 13 hours of daylight.

Expect 46mm (1.8 inches) of rainfall across the whole of April with 4 days with some rain falling. Maximum UV levels will be extreme (11 UV index) at midday when the skies are clear.

The average sea temperature in and around Key West in April is 25°C (77°F).