Weather in Key West, United States in August

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Visiting Key West, United States in August

The weather in August is slightly warmer than the previous month. August has average maximum temperatures of 32°C (90°F) which is very hot and perfect for sunbathing on clear days. The sunshine percentage is 60% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.8 hours of sunshine per day. It is a good time for sunbathing in Key West.

August has total rainfall of 17.3cm (6.8inches) making it a bit rainy but with only moderate showers. There are 18.2 days with some rainfall so you can still enjoy the beach on the clear days.

Sea temperatures are a very warm 29°C (84°F). August is an excellent month for swimming in Key West with very comfortable temperatures for bathing all day. The sea temperature in August is slightly cooler than the previous month.

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 August.

Can you sunbathe in Key West in August?

Yes, August is a good time for sunbathing in Key West.

August has average maximum temperatures of 32°C (90°F) which is very hot and perfect for sunbathing on clear days. The sunshine percentage is 60% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.8 hours of sunshine per day. August has total rainfall of 17.3cm (6.8inches) making it a bit rainy but with only moderate showers. There are 18.2 days with some rainfall so you can still enjoy the beach on the clear days.

More about August temperature and sunshine.

Can you swim in Key West in August?

Yes, August is an excellent month for swimming in Key West with very warm sea temperatures 29°C (84°F).

More about August sea temperatures.

Is August a good time to holiday in Key West?

Yes, August is a good time for a holiday in Key West.

August has average maximum temperatures of 32°C (90°F) which is very hot and perfect for sunbathing on clear days. The sunshine percentage is 60% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.8 hours of sunshine per day. August has total rainfall of 17.3cm (6.8inches) making it a bit rainy but with only moderate showers. There are 18.2 days with some rainfall so you can still enjoy the beach on the clear days. It is a good time for sunbathing in Key West. Sea temperatures are a very warm 29°C (84°F). August is an excellent month for swimming in Key West with very comfortable temperatures for bathing all day.

More about the August temperatures and sunshine.

Is Key West warm in August?

Yes, Key West is very hot and perfect for sunbathing on clear days in August.

The average maximum temperature in Key West in August is 32°C (90°F). The average maximum temperature is 32°C (89°) in the previous month and 31°C (88°F) in the next month.

The average temperature in Key West in August is 30°C (85°F). The average temperature is 29°C (85°F) in the previous month and 29°C (83°F) in the next month.

More info about the August temperatures and sunshine.

How sunny is Key West in August?

The average day light hours per day in Key West in August are 13. The sunshine percentage is 60% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.8 hours of sunshine per day.

More about August sunshine.

Temperature in Key West in August

The weather in August is slightly warmer than the previous month. The average maximum temperature in Key West in August is 32°C (90°F). The average maximum temperature is 32°C (89°F) in the previous month and 31°C (88°F) in the next month.

The average temperature in Key West in August is 30°C (85°F). The average temperature is 29°C (85°F) in the previous month and 29°C (83°F) in the next month.

The average minimum temperature in Key West in August is 27°C (81°F). The minimum temperature is 27°C (80°F) in the previous month and 26°C (79°F) in the next month.

Sunshine in Key West in August

The days in August are marginally shorter than the previous month and days continue to get slightly shorter into September. August has fewer hours of sunshine than the previous month and hours of sunshine continue to drop slightly into September. During August the average day light hours are 13 per day in Key West. The sunshine percentage is 60% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.8 hours of sunshine per day.

The ultraviolet index in Key West in August is typically 12.4 during August. 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 August

The average sea water temperature in Key West in August is 29°C (84.2°F) which is very warm and ideal for relaxing and swimming for the whole day. The sea temperature in August is slightly cooler than the previous month.

Rainfall in Key West in August

August weather is wetter than the previous month and rainfall continues to rise into September. August has a few more days of rain than the previous month and rainy days continue to rise slightly into September. The average total rainfall in Key West in August is 17.3cm (6.8inches) and on average there are 18.2 rainy days in August making it a wet time to visit the beach.

Humidity in Key West in August

The maximum dew point (an indicator of humidity) in Key West in August is 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 dew point is 25°C (76°F) in the previous month and 25°C (25°F) in the next month.

The average maximum relative humidity in Key West in August is typically 81.8%. The maximum relative humidity is 81.9% in the previous month and 86.1% in the next month.

The average relative humidity in Key West in August is typically 72.3%. The average relative humidity is 72.5% in the previous month and 75.8% in the next month.

Wind Speed in Key West in August

The average maximum wind speed in Key West in August is typically 29KM/H (18MPH). The average maximum wind speed is 27KM/H (17MPH) in the previous month and 29KM/H (18MPH) in the next month.

The average wind speed in Key West in August is typically 14KM/H (9MPH). The average wind speed is 13KM/H (8MPH) in the previous month and 14KM/H (8MPH) in the next month.

The average wind direction in Key West in August is from the East-Southeast.

Monthly Averages

Suggested Beaches in August

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Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.

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Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.