Johnson Key Water Temperature

(Today) 2024

26.2°C / 79.2°F

The water will feel hot. Water temperature similar to a heated indoor swimming pool.

Current weather

25°C / 76°F
(clear sky)
Partly cloudy
Wind
15 mph
Humidity
65%

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

WedThuFriSatSunMonTue
  • High 4:42am
    (0.58m)
  • Low 11:28am
    (0.13m)
  • High 3:57pm
    (0.79m)
  • Low 12:30am
    (-0.11m)
  • High 5:21am
    (0.55m)
  • Low 11:54am
    (0.14m)
  • High 4:25pm
    (0.8m)
  • Low 1:07am
    (-0.12m)
  • High 6:03am
    (0.5m)
  • Low 12:23pm
    (0.15m)
  • High 4:56pm
    (0.81m)
  • Low 1:47am
    (-0.13m)
  • High 6:49am
    (0.45m)
  • Low 12:53pm
    (0.16m)
  • High 5:31pm
    (0.81m)
  • Low 2:34am
    (-0.12m)
  • High 7:41am
    (0.41m)
  • Low 1:28pm
    (0.18m)
  • High 6:13pm
    (0.8m)
  • Low 3:29am
    (-0.09m)
  • High 8:43am
    (0.38m)
  • Low 2:10pm
    (0.19m)
  • High 7:04pm
    (0.79m)
  • Low 4:32am
    (-0.06m)
  • High 9:54am
    (0.37m)
  • Low 3:09pm
    (0.21m)
  • High 8:10pm
    (0.76m)
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.