Sea Temperature

Grand Isle Sea Temperature

(Today) Sep 2018

30°C / 86°F

Current weather

27°C / 81°F
(scattered clouds)

Partly cloudy
Wind

3 mph

Humidity

83%


The measurements for the water temperature in Grand Isle, Louisiana 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.

Monthly average max / min water temperatures

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

Maximum and minimum monthly sea temperatures in Grand Isle
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 13.8 14.4 14.5 20.4 22.6 27.7 29 28.9 26.5 22.8 18.6 15.6
Max °C 18.9 19.7 23.4 25.8 29.1 30.6 31.7 32.8 31 28.6 25.2 20.1
Min °F 58.8 60 61.6 70.9 75.2 83 85.2 85.5 81.5 75.4 68.1 61.8
Max °F 63.9 65.3 70.5 76.3 81.7 85.9 87.9 89.4 86 81.2 74.7 66.3

7 day tide forecast for Grand Isle

WedThuFriSatSunMonTue
  • High 07:10am
    (1.30m)
  • Low 06:30pm
    (0.39m)
  • High 08:20am
    (1.28m)
  • Low 07:09pm
    (0.43m)
  • High 09:27am
    (1.25m)
  • Low 07:41pm
    (0.49m)
  • High 10:28am
    (1.21m)
  • Low 08:02pm
    (0.57m)
  • High 11:28am
    (1.15m)
  • Low 08:09pm
    (0.66m)
  • High 12:32pm
    (1.08m)
  • Low 07:58pm
    (0.75m)
  • High 02:06am
    (0.84m)
  • Low 05:44am
    (0.79m)
  • High 01:50pm
    (0.99m)
  • Low 07:24pm
    (0.84m)

*These tide times are estimates based on the nearest port (Bayou Rigaud, Grand Isle) and may differ by up to half and hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.

Average September sea temperatures

  • Max: 31°C / 87.7°F
  • Avg: 28.7°C / 83.7°F
  • Min: 26.5°C / 79.6°F
Grand Isle average sea temperature chart

These average ocean temperatures for Grand Isle are calculated from several years of archived data.

Map showing location of Grand Isle (29.236620, -89.987290)

Variations

Whilst sea temperatures for Grand Isle are as accurate as current data allows, there may be slight local and regional variations depending on conditions. Time of day and wind direction may have a temporary local effect as can water flows from neraby rivers.

Alternate names for Grand Isle

Grand Isle average sea temperature chart