World sea water temperatures

Water temperature in Grand Isle (VT) in August

Is it warm enough to swim in Grand Isle in August? Average water temperature in Grand Isle in August is 73.8°F and therefore suitable for comfortable swimming. The warmest water in Grand Isle in August is 78.8°F, and the coldest is 69.6°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 August 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 August.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
August 175°F77°F70.9°F77.2°F
August 274.1°F77.7°F70°F77.7°F
August 374.3°F77.7°F70°F77.7°F
August 474.3°F77.5°F69.8°F77.5°F
August 573.6°F78.8°F70.7°F78.8°F
August 673.2°F78.4°F70.9°F78.4°F
August 772.5°F77°F71.2°F77°F
August 874.8°F76.8°F71.2°F76.8°F
August 975°F75.2°F71.8°F77°F
August 1075.6°F75.2°F71.6°F77°F
August 1176.1°F73.9°F70.7°F77°F
August 1277.2°F73°F70.7°F77.2°F
August 1377.4°F73°F71.2°F77.5°F
August 1477°F73.8°F71.4°F77.7°F
August 1576.5°F73.9°F71.2°F77.2°F
Day 2025 2024 Min Max
August 1676.3°F73.6°F70.9°F77.2°F
August 1777°F74.3°F71.1°F77°F
August 1875.6°F73.6°F71.2°F75.7°F
August 1974.5°F73.2°F71.4°F76.1°F
August 2073.4°F72.5°F71.2°F75.9°F
August 2173°F71.6°F70.9°F75.2°F
August 2272.7°F70.7°F70.7°F77°F
August 2373°F70.7°F70.5°F77.4°F
August 2473.2°F69.8°F69.8°F77.2°F
August 2572.7°F70°F70°F77.5°F
August 2671.6°F70.9°F70.9°F78.1°F
August 2771.4°F72.7°F70.7°F77.5°F
August 2870.7°F72°F70.2°F76.6°F
August 2970.3°F71.2°F70.3°F75°F
August 3069.8°F70.7°F69.8°F75.4°F
August 3169.1°F69.6°F69.1°F74.5°F
Grand Isle water temp chart in August

Average water temperature in Grand Isle in August over a decade

20162017201820192020
74.8°F72.1°F75.2°F74.1°F74.8°F
20212022202320242025
74.1°F74.7°F71.4°F73.8°F74.1°F

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 August?

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

AvrMinMax
Swanton74.3°F69.6°F79.9°F
Alexandria Bay72.9°F67.3°F76.8°F
Clayton72.5°F66.4°F77°F
Gananoque72.5°F66°F77.4°F
Dexter74.3°F68.9°F78.1°F
Henderson Harbor74.1°F68.9°F78.1°F
Pillar Point74.1°F68.9°F78.1°F
Sackets Harbor74.1°F68.9°F78.1°F
Southwick Beach73.8°F68.2°F77.4°F
Kingston73°F66.9°F77.7°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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