World sea water temperatures

Water temperature in Grand Isle (LA) in April

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Is it warm enough to swim in Grand Isle in April? Average water temperature in Grand Isle in April is 72.5°F and therefore suitable for comfortable swimming. The warmest sea in Grand Isle in April is 80.2°F, and the coldest is 64.6°F. Average high air temperature in Grand Isle in April is 77°F, and average low temperature is 60°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 April 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 April.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
April 174.5°F69.6°F64.9°F74.8°F
April 275.9°F69.4°F64.8°F75.9°F
April 376.5°F70.5°F64.6°F76.5°F
April 475.9°F70°F65.5°F75.9°F
April 577.4°F70.9°F66.4°F77.4°F
April 676.8°F70.9°F66.9°F77°F
April 776.3°F70.9°F67.8°F76.3°F
April 873.6°F72°F67.3°F76.5°F
April 971.8°F73.2°F67.1°F76.3°F
April 1071.6°F72°F67.5°F75.6°F
April 1172.1°F71.2°F68.4°F75.9°F
April 1272.3°F71.2°F68.5°F76.5°F
April 1372.7°F71.8°F68.9°F75.6°F
April 1473.6°F72.5°F70°F75.7°F
April 1573.4°F72.5°F68.4°F77.2°F
Day 2025 2024 Min Max
April 1673.6°F72°F68.4°F77°F
April 1773.6°F73.2°F68.7°F77°F
April 1874.7°F73.4°F68.9°F76.5°F
April 1972.7°F75°F68.2°F76.5°F
April 2075.2°F76.5°F68.7°F76.6°F
April 2174.8°F75.2°F69.6°F76.5°F
April 2276.6°F74.1°F69.4°F76.6°F
April 2375.2°F72.9°F70.3°F77°F
April 2476.3°F74.1°F71.2°F78.3°F
April 2576.5°F73.4°F71.1°F78.1°F
April 2679°F76.1°F70.9°F79°F
April 2779.7°F75.6°F72°F79.7°F
April 2880.1°F75.4°F72°F80.1°F
April 2979.9°F74.3°F72.5°F79.9°F
April 3080.2°F77°F72.9°F80.2°F
Grand Isle water temp chart in April

Average water temperature in Grand Isle in April over a decade

20162017201820192020
72.1°F74.3°F71.2°F71.1°F73.9°F
20212022202320242025
71.6°F73.6°F73.2°F72.9°F75.4°F

Grand Isle sea state in April

Chart comparing the height of waves in Grand Isle in April 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 April

Weather and climate in Grand Isle in April

This data display average monthly climate indicators in Grand Isle in April 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 temperature77°F
  • Average LOW temperature60°F
  • Average rainfall142mm/5.6''

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 April?

Want to know where the water temperature in April 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 April. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Buras71.2°F64.2°F79.2°F
Cocodrie72.9°F64.9°F81.3°F
Boothville70°F63.1°F76.6°F
Shell Beach71.8°F64.6°F79.9°F
Venice70°F63.1°F76.6°F
Mandeville71.1°F62.2°F79.9°F
Chandeleur Islands71.2°F64°F81.3°F
Waveland71.1°F63.7°F80.8°F
Bay Saint Louis71.1°F63.1°F81.1°F
Gulfport71.1°F63.5°F80.4°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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