Johnson Key Water Temperature

(Today) 2024

24.1°C / 75.3°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.

Current weather

25°C / 77°F
(moderate rain)
Partly cloudy
Wind
16 mph
Humidity
75%

The measurements for the water temperature in Johnson Key, 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.

Water temp by month

Monthly average max / min water temperatures

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

Johnson Key average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Johnson Key
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 21.8 21.4 21.9 24.3 25.1 27.4 28.4 29.4 28.8 26.3 24.2 23.4
Max °C 24.8 25.1 26.5 27.8 29.4 29.9 31 31.3 30.5 30.2 28 26
Min °F 72.4 72 73.3 77.1 78.9 82.3 84.2 85.6 84.5 80.9 77.1 75.2
Max °F 75.4 75.7 77.9 80.6 83.2 84.8 86.8 87.5 86.2 84.8 80.9 77.8

The warmest water temperature is in August with an average around 86.5°F / 30.3°C. The coldest month is February with an average water temperature of 73.8°F / 23.2°C.

7 day tide forecast for Johnson Key

TueWedThuFriSatSunMon
  • Low 4:32am
    (-0.06m)
  • High 9:54am
    (0.37m)
  • Low 3:09pm
    (0.21m)
  • High 8:10pm
    (0.76m)
  • Low 5:40am
    (-0.03m)
  • High 11:03am
    (0.41m)
  • Low 4:37pm
    (0.22m)
  • High 9:32pm
    (0.73m)
  • Low 6:44am
    (-0.01m)
  • High 11:56am
    (0.47m)
  • Low 6:16pm
    (0.19m)
  • High 11:05pm
    (0.71m)
  • Low 7:38am
    (0.02m)
  • High 12:38pm
    (0.56m)
  • Low 7:41pm
    (0.12m)
  • High 12:31am
    (0.69m)
  • Low 8:24am
    (0.05m)
  • High 1:14pm
    (0.66m)
  • Low 8:50pm
    (0.03m)
  • High 1:44am
    (0.68m)
  • Low 9:05am
    (0.07m)
  • High 1:49pm
    (0.77m)
  • Low 9:50pm
    (-0.06m)
  • High 2:47am
    (0.66m)
  • Low 9:44am
    (0.09m)
  • High 2:24pm
    (0.86m)
  • Low 10:45pm
    (-0.14m)
7 day tide times for Johnson Key

*These tide times are estimates based on the nearest accurate location (Flamingo, Florida Bay, 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.