Temperatures in August
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.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Key West in August. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of August
The month of August starts in Key West with hot temperatures, averaging around 33°C during the day and nights close to 29°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
Mid-August
By mid-August, the average daytime temperature stays the same at 33°C, with nights close to 29°C. There might be a few showers during this period, but plenty of dry days with sunshine too. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
End of August
By the end of August, the average daytime temperature in Key West will be around 33°C, with nights close to 29°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
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Water temperature
The water temperature at Key West is 32°C this month. It’s really warm, perfect for a swim.
Precipitation in August
In August, there is an average of 107 mm of precipitation, spread over 12 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
The average precipitation chance is 38% per day this month. The weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in August for Key West. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Key West in August |
London | ||
|---|---|---|---|
 Average Temperature |
33°C | 22°C | |
 High Temp |
33°C | 24°C | |
| Low Temp |
32°C | 19°C | |
 Total Precipitation |
107 mm | 60 mm | |
| Rainy Days |
12 days | 10 days | |
July
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.
Is August a good time to visit Key West?
After some sun? Then August isn’t the best time to be in Key West. The temperature is pleasant, but there’s too much chance of rain this month.
The hurricane season in Key West runs from June to November.
Temperature records for Key West in August
With 35°C, Key West hit the highest temperature in the last 10 years in August 2019. The lowest daytime temperature in this month was 28°C in 2016. The extreme night temperatures ranged from a low of 23°C to a high of 32°C.
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Daily Temperature in August in Key West
This chart shows the average daily temperatures, both day and night, for each day in August in Key West, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in August in Key West
The chart below shows the average daily precipitation in August for Key West, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for August, you can expect around 12 days of rain in Key West.
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.
Temperature in August in Key West Over the Years
This chart shows the average temperature in August in Key West, measured in degrees Celsius, over the past years.
Total Precipitation in August in Key West Over the Years
This chart shows the average precipitation in August in Key West, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in August for Key West
Click on a specific day in August for detailed info on the typical weather on that day in Key West. Check out the historical temperatures and precipitation over the past 10 years on this day.
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.
