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United StatesThe weather in August in Key West
It's hot in August in Key West with an average temperature of 33°C. Temperatures this month range from a low of 32°C to a high of 33°C. At night, you can expect temperatures between 28°C and 29°C.
Looking for sun? August isn’t a good month to be in Key West. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in August for Key West, Florida. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 35°C in 2019, Key West reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 28°C in 2016. The extreme nighttime temperatures ranged from a lowest recorded value of 23°C to a highest value of 32°C.
Water temperature
The water temperature at Key West is 32°C this month. It’s really warm, perfect for a swim.
Rainfall amount
In August, there is an average of 107 mm of precipitation, spread over 13 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
Daily weather in August for Key West
Click on any day in August to get detailed info about the usual weather on that day in Key West. Check out the historical temperatures and precipitation over the past 10 years on this day.
August weather comparison
| Key West | New York | |
|---|---|---|
| Average temperature | 33°C | 30°C |
| Max. temperature | 33°C | 31°C |
| Min. temperature | 28°C | -5°C |
| Total precipitation | 107 mm | 79 mm |
| Rainy days | 13 days | 13 days |
Start of August
The month of August starts in Key West with hot temps, averaging around 33°C during the day and nights around 29°C.
Mid August
By mid-August, daytime temps stay steady at around 33°C, with nights around 29°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of August
By the end of August, the average daytime temperature in Key West is around 33°C, while nighttime temps are about 29°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
Find affordable trips to Key West
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
The hurricane season in Key West runs from June to November.
Check out the climate of Key West for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in August in Key West, Florida. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in August in Key West
Temperature in August in Key West over the years
Precipitation charts
These charts show the average amount of precipitation in August in Key West, Florida. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in August in Key West
Total precipitation in August in Key West over the years
Daily UV index in August in Key West
This chart shows the average daily UV index in August in Key West, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in August in Key West
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Average weather in Key West by month
Click on a month below to see detailed weather info for Key West. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.