Key West Water Temperature

(Today) 2024

25.6°C / 78°F

The water will feel warm (balmy). Most people will be OK with just bathers / swimming costume at this temperature. If you intend to stay in the water for a while a thin shorty wetsuit will suffice.

*Live data from Key West, FL: 25.3°C / 77.5°F

Current weather

25°C / 77°F
(few clouds)
Partly cloudy
Wind
20 mph
Humidity
86%

The measurements for the water temperature in Key West, Florida are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

*Live data may vary from satellite readings for a number of reasons. These include local factors, depth of smapling and time of day.

Water temp by month

Monthly average max / min water temperatures

The graph below shows the range of monthly Key West water temperature derived from many years of historical sea surface temperature data.

Key West average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Key West
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 19.8 19.5 20.3 23.5 24.8 27.1 28.3 29.3 28.7 26.3 23.8 22.2
Max °C 23.8 24.1 25.6 27.3 29.3 29.9 31.1 31.7 30.8 30.2 27.9 25
Min °F 69.2 68.9 70.6 75.8 78.4 81.9 84.1 85.7 84.5 80.9 76.4 73.1
Max °F 73.2 73.5 75.9 79.6 82.9 84.7 86.9 88.1 86.6 84.8 80.5 75.9

The warmest water temperature is in August with an average around 86.9°F / 30.5°C. The coldest month is January with an average water temperature of 71.2°F / 21.8°C.

7 day tide forecast for Key West

ThuFriSatSunMonTueWed
  • High 12:56am
    (0.62m)
  • Low 8:03am
    (0.09m)
  • High 2:56pm
    (0.37m)
  • Low 7:17pm
    (0.28m)
  • High 1:56am
    (0.57m)
  • Low 9:05am
    (0.14m)
  • High 4:03pm
    (0.4m)
  • Low 8:51pm
    (0.29m)
  • High 3:05am
    (0.52m)
  • Low 10:03am
    (0.17m)
  • High 4:58pm
    (0.44m)
  • Low 10:19pm
    (0.27m)
  • High 4:25am
    (0.48m)
  • Low 10:52am
    (0.2m)
  • High 5:39pm
    (0.48m)
  • Low 11:29pm
    (0.23m)
  • High 5:45am
    (0.46m)
  • Low 11:35am
    (0.22m)
  • High 6:10pm
    (0.51m)
  • Low 12:24am
    (0.19m)
  • High 6:53am
    (0.44m)
  • Low 12:11pm
    (0.23m)
  • High 6:37pm
    (0.54m)
  • Low 1:09am
    (0.13m)
  • High 7:46am
    (0.43m)
  • Low 12:44pm
    (0.24m)
  • High 7:05pm
    (0.57m)
7 day tide times for Key West

*These tide times are estimates based on the nearest accurate location (Key West, south side, Hawk Channel, Florida) and may differ by up to half an hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.