Key West in august: average Weather, Temperature and Climate
Weather in Key West in august 2025
The weather in Key West in august comes from statistical datas on the last years. You can view the weather statistics for the whole month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout august
tolerable weather UV index: 7
Weather at 6am
86°F
Moderate rain at times
31% of time
30%
23%
13%
Weather at 12pm
86°F
Clear/Sunny
31% of time
23%
23%
20%
Weather at 6pm
86°F
Clear/Sunny
53% of time
20%
15%
12%
Weather at 3am
86°F
35%
31%
24%
8%
Evolution of daily average temperature and precipitation in Key West in august
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Key West in august.
The climate of Key West in august is tolerable
The weather in august in Key West is wet (with 10.2in of rainfall over 15 days). The weather is worst than the previous month since in july there is an average of 8.7in of precipitation over 14 days.
The climate is very warm around this city in august. The high seasonal norm is 86°F. In the morning the temperature drops to 85°F. Thus, the mean temperature average on this month of august in Key West is 86°F. Note that these seasonal averages are in contrast with those observed in Key West in the month of august with a maximum record of 88°F in 2011 and a minimum record of 68°F in 2021. You You can hope to have about 18 days with temperatures up to 86°F, or 58 of the month.
On average, in Key West, the days of august last 12:59. Sunrise is at 06:02 and sets at 19:01.
With a correct climate, this month is okay (but not the best) to go in that area in United States.
August: another location in Florida?
If you want to go to Florida in august, there are destinations with better weather than Key West:
In august, Pensacola has good weather.
Seasonal average climate and temperature of Key West in august
Check below seasonal norms These datas are generated from the weather statements earlier years of the month of august.
| August | |||||
| Outside temperature | |||||
| Average temperature | 86°F | ||||
| Highest temperature | 86°F | ||||
| Lowest temperature | 85°F | ||||
| Highest record temperature | 88°F (2011) | ||||
| Lowest record temperature | 68°F (2021) | ||||
| Number of days at +86°F | 18 day(s) (58%) | ||||
| Number of days at +65°F | 31 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 88°F | ||||
| Lowest sea temperature | 85°F | ||||
| Highest sea temperature | 90°F | ||||
| Wind | |||||
| Wind speed | 20km/h | ||||
| Wind temperature | 85°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 10.2in | ||||
| Number of days with rainfall | 15 day(s) (48%) | ||||
| Record daily rainfall | 3.4in (2010) | ||||
| Other climate data | |||||
| Humidity | 76% | ||||
| Visibility | 9.27km | ||||
| Cloud cover | 29% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:02 | ||||
| Time of sunset | 19:01 | ||||
| Length of day | 12:59 | ||||
| Our opinion about the weather in august | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last august?
Here is the day by day recorded weather in Key West in august 2024:
85°F to 86°F
85°F to 86°F
83°F to 86°F
85°F to 86°F
85°F to 86°F
85°F to 86°F
85°F to 85°F
85°F to 85°F
85°F to 86°F
85°F to 86°F
86°F to 86°F
85°F to 86°F
85°F to 86°F
85°F to 86°F
85°F to 86°F
85°F to 86°F
83°F to 86°F
85°F to 86°F
85°F to 86°F
85°F to 86°F
85°F to 86°F
85°F to 86°F
85°F to 86°F
86°F to 88°F
83°F to 85°F
85°F to 86°F
85°F to 85°F
85°F to 86°F
85°F to 86°F
85°F to 86°F
83°F to 85°F
Map: other cities in Florida in august
Cities near Key West:
| Big Pine Key in august | tolerable weather |
| Dry Tortugas National Park in august | tolerable weather |
| Everglades National Park in august | tolerable weather |
| Islamorada in august | tolerable weather |
| Key Largo in august | tolerable weather |
| Marco Island in august | tolerable weather |
| Naples in august | tolerable weather |
| Big Cypress National Preserve in august | tolerable weather |
| Biscayne National Park in august | bad weather |
| Miami in august | tolerable weather |
| Sanibel Island in august | bad weather |
| Captiva Island in august | tolerable weather |
Click over cities on the map for information about the weather in august.
Key West
perfect weather
good
tolerable
bad
very bad
Weather data for Key West in august:
Weather data for Key West for august are derived from an average of the weather forecast since 2009 in Key West. There is a margin of error and these forecasts are to be considered as general information only. The weather in Key West can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Key West.