Weather in Key West, United States in May

So you're interested in going to Key West, United States in May

May is a hot and rainy time for sunbathing in Key West. May is an excellent month for swimming in Key West with very warm sea temperatures. Consider visiting Key West in the months of March, April, May, December, for the best beach weather. Also consider one of our other suggestions for May.

Temperature in Key West in May

The average maximum temperature in Key West in May is 29°. The average maximum temperature is 28° in the previous month and 31° in the next month.

The average temperature in Key West in May is 27°. The average temperature ranges is 25° in the previous month and 29° in the next month.

The average minimum temperature in Key West in May is 25°. The minimum temperature is 22° in the previous month and 26° in the next month.

Sunshine in Key West in May

The average day light hours per day in Key West in May are 13.3 and there are 8.8 hours of sunshine per day on average during May making it a sunny month with few clouds.

The ultraviolet index in Key West in May is typically 12.4 during May. An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in Key West in May

The average sea water temperature in Key West in May is 27.7° which is very warm and ideal for relaxing and swimming for the whole day.

Rainfall in Key West in May

The average total rainfall in Key West in May is 76.9cm and on average there are 7.9 rainy days in May making it a wet time to visit the beach.

Humidity in Key West in May

The maximum dew point (an indicator of humidity) in Key West in May is 22° which is very humid and quite uncomfortable for most unless you are on a beach. At night you would most likely require a fan. The dew point is 21° in the previous month and 24° in the next month.

The average maximum relative humidity in Key West in May is typically 80.9%. The maximum relative humidity is 81.3% in the previous month and 83.1% in the next month.

The average relative humidity in Key West in May is typically 71.3%. The average relative humidity is 70.5% in the previous month and 73.7% in the next month.

Wind Speed in Key West in May

The average maximum wind speed in Key West in May is typically 28kmh. The average maximum wind speed is 29kmh in the previous month and 28kmh in the next month.

The average wind speed in Key West in May is typically 16kmh. The average wind speed is 17kmh in the previous month and 15kmh in the next month.

The average wind direction in Key West in May is from the East.

Monthly Averages

Suggested Beaches in May

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