World sea water temperatures

Water temperature in Grand Isle (LA) in January

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Is it warm enough to swim in Grand Isle in January? Average water temperature in Grand Isle in January is 62.1°F and therefore is not suitable for comfortable swimming. The warmest sea in Grand Isle in January is 72.9°F, and the coldest is 55.9°F. Average high air temperature in Grand Isle in January is 65°F, and average low temperature is 48°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Grand Isle

Changes water temperature in Grand Isle in January 2025, 2024

To get an accurate forecast for the water temperature in Grand Isle for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Grand Isle, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of January.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
January 166.6°F61.7°F61.7°F72.5°F
January 264.8°F61.7°F61.7°F72.9°F
January 364°F61.2°F61°F70.9°F
January 463.9°F60.8°F60.8°F69.4°F
January 565.8°F59.9°F59.9°F69.1°F
January 665.8°F60.8°F60.1°F67.1°F
January 765.5°F59.4°F59.4°F68.2°F
January 863.5°F61.3°F59.7°F68.7°F
January 963.9°F60.8°F59.7°F67.8°F
January 1063.7°F61°F59.7°F67.6°F
January 1161.3°F60.6°F59.9°F66.2°F
January 1260.6°F59.7°F59°F65.8°F
January 1358.5°F60.3°F57.6°F66°F
January 1457.2°F59.5°F56.7°F65.7°F
January 1557.6°F58.8°F57.2°F66°F
Day 2025 2024 Min Max
January 1659.4°F58.6°F58.6°F65.5°F
January 1759.4°F59.2°F57.6°F67.3°F
January 1859.5°F59.5°F57.6°F66.9°F
January 1959.4°F58.1°F57.6°F66°F
January 2058.8°F57.4°F57.4°F66.2°F
January 2159°F55.9°F55.9°F66.6°F
January 2258.3°F56.7°F56.7°F66.9°F
January 2359°F58.8°F58.6°F67.3°F
January 2459°F59°F59°F66.9°F
January 2557°F60.1°F57°F66.6°F
January 2658.3°F60.1°F57.7°F65.7°F
January 2756.7°F61.5°F56.7°F65.1°F
January 2857.4°F60.3°F57.4°F64.2°F
January 2958.6°F59.7°F55.9°F65.1°F
January 3060.8°F60.1°F56.7°F65.1°F
January 3161.2°F59.9°F56.8°F64.9°F
Grand Isle water temp chart in January

Average water temperature in Grand Isle in January over a decade

20162017201820192020
60.4°F65.3°F60.6°F60.8°F62.4°F
20212022202320242025
61.3°F64.4°F63.7°F59.7°F60.8°F

Grand Isle sea state in January

Chart comparing the height of waves in Grand Isle in January over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Grand Isle in January

Weather and climate in Grand Isle in January

This data display average monthly climate indicators in Grand Isle in January based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

  • Average HIGH temperature65°F
  • Average LOW temperature48°F
  • Average rainfall119mm/4.7''

Grand Isle water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in January?

Want to know where the water temperature in January is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Temperature in neighboring cities

The nearest locations with the average water temperature in January. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Buras62.6°F55.2°F72°F
Cocodrie61.3°F48.2°F73.2°F
Boothville61.3°F49.8°F71.1°F
Shell Beach59°F49.3°F73.2°F
Venice62.2°F52°F71.4°F
Mandeville58.3°F47.7°F68.4°F
Chandeleur Islands61.5°F54.9°F70.2°F
Waveland57.6°F50.5°F70°F
Bay Saint Louis57.6°F50.2°F70.2°F
Gulfport57.4°F48.2°F67.5°F

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Grand Isle is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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