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Best
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Best
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Best
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Best
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Tan
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Tan
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Tan
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Tan
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Tan
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Tan
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Tan
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Tan
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Tan
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Tan
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Tan
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Tan
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Sea
23°
Swim
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Sea
23°
Swim
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Sea
23°
Swim
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Sea
24°
Swim
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Sea
28°
Swim
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Sea
29°
Swim
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Sea
29°
Swim
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Sea
29°
Swim
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Sea
30°
Swim
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Sea
27°
Swim
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Sea
27°
Swim
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Sea
25°
Swim
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The annual average maximum daily temperature is 28.1°C (82.6°F) which is very warm and perfect for sunbathing on clear days. The annual average water temperature is typically 26.4°C (79.5°F) which is very warm and ideal for relaxing and swimming for the whole day. Annually there are on average 10.5 days of rain per month and 7.8 hours of sun per day.
The best months to visit Key West are March, April, May, December, for the best beach weather, the most sunshine and optimal sunbathing and swimming conditions with the least chance of rain.
The weather is perfect for sunbathing in the months from April to November when the maximum temperature reaches above 26°C (72°F)
The sea is best for swimming between May and November when the sea temperature is above the average 26°C (79°F) which is very warm and ideal for relaxing and swimming for the whole day.
Yes, you can sunbathe in Key West all year round.
The weather is best for sunbathing in the months from April to November when the maximum temperature reaches above 26°C (72°F)
More info about the annual temperatures and sunshine.
Yes, you can swim in Key West all year round.
The warmest sea water temperatures in Key West are found in September when they peak at 30°C (85°F) and lowest in January when they dip to 23°C (73°F).
The sea temperature is above average for swimming between May and November when the sea temperature is above 26°C (79°F) which is very warm and ideal for relaxing and swimming for the whole day.
More info about the annual sea temperatures
The hottest month in Key West is August when the average maximum temperature is very hot and perfect for sunbathing on clear days 32°C (90°F), average temperature is 30°C (85°F) and average minimum temperature is 27°C (81°F).
More info about the annual temperatures and sunshine.
The coolest month in Key West is January when the average maximum temperature is 24°C (75°F), average temperature is 21°C (70°F) and average minimum temperature is 18°C (65°F).
More info about the annual temperatures and sunshine
The driest month in Key West is March with 3.6cm (1.4inches) of rain and April has the fewest days of rain with 4.5 days with some rain, a very dry time to visit the beach.
More info about the annual rainfall
The coldest sea water temperatures in Key West are found in January when they dip to 23°C (73°F) which is warm and pleasant for relaxing and swimming for long periods.
More info about the annual sea temperatures.
The warmest sea water temperatures in Key West are found in September when they peak at 30°C (85°F) which is very warm and ideal for relaxing and swimming for the whole day.
More info about the annual sea temperatures.
The most humid month in Key West is August with a dew point (an indicator of humidity) of 25°C (77°F) which is very uncomfortable and fairly oppressive unless you are on a beach. At night you would most likely require airconditioning.
More info about the annual humidity.
The least humid month in Key West is January with a dew point of 18°C (65°F) which is somewhat uncomfortable for most people in cities but fine on a beach.
More info about the annual humidity.
The most windy month in Key West is March when the average maximum windspeed is 30KM/H (18MPH) and the average wind speed is 18KM/H (11MPH).
More info about the annual wind conditions.
The hottest month in Key West is August when the average maximum temperature is 32°C (90°F), average temperature is 30°C (85°F) and average minimum temperature is 27°C (81°F).
The coolest month in Key West is January when the average maximum temperature is 24°C (24°F), average temperature is 21°C (70°F) and average minimum temperature is 18°C (65°F).
The longest days in Key West are in June, with an average of 13.6 hours of daylight per day. December has the shortest days with an average of 10.6 hours of daylight per day.
The sunniest days in Key West are in April which has the most hours of sunshine per day. The sunshine percentage is 70% making it sunny but overcast at times. The hours of sunshine per day are 8.8hrs making the days long and bright.
November has the least sunshine. The sunshine percentage is 58% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 6.8 hours of sunshine per day.
The ultraviolet index is the highest in July when it reaches 12.5 and lowest in December when it reaches 5.6.
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.
The warmest sea water temperatures in Key West are found in September when they peak at 30°C (85°F) and lowest in January when they dip to 23°C (73°F).
The sea is best for swimming between May and November when the temperature is above 26°C (79°F) which is very warm and ideal for relaxing and swimming for the whole day.
The wettest month in Key West is September with 21.7cm (8.5inches) of rain and the most days of rain with 19 days with some rain, a wet time to visit the beach.
The driest month in Key West is March with 3.6cm (1.4inches) of rain and April has the fewest days of rain with 4.5 days with some rain, a very dry time to visit the beach.
The most humid month in Key West is August with a dew point (an indicator of humidity) of 25°C (77°F) which is very uncomfortable and fairly oppressive unless you are on a beach. At night you would most likely require airconditioning.
The least humid month in Key West is January with a dew point of 18°C (65°F) which is somewhat uncomfortable for most people in cities but fine on a beach.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
