Key West Weather in May

The climate in Key West during May can be summarized as hot, humid and damp.

May is in the spring in Key West and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a steamy 29°C (85°F), whilst at night 23°C (74°F) is normal.

On average May is the 5th wettest month of the year in Key West with around 107mm 4.2 inches of rain making it a damp time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 11.3 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Key West in May 2024.