World sea water temperatures

Water temperature in Grand Isle (VT) in May

Is it warm enough to swim in Grand Isle in May? Average water temperature in Grand Isle in May is 51.1°F and therefore is not suitable for comfortable swimming. The warmest water in Grand Isle in May is 62.8°F, and the coldest is 40.6°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 May 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 May.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
May 146.6°F44.4°F42.6°F46.6°F
May 246.4°F44.8°F41.5°F46.4°F
May 346.2°F45°F41.9°F46.2°F
May 446.2°F46.6°F42.3°F46.6°F
May 546.4°F45.5°F42.8°F48.4°F
May 646.6°F46.2°F44.1°F49.6°F
May 748.6°F49.5°F44.6°F49.8°F
May 848.7°F50.5°F45.9°F51.1°F
May 948.9°F50.5°F45.9°F50.5°F
May 1049.1°F50.5°F46.6°F51.3°F
May 1149.3°F51.3°F47.7°F51.4°F
May 1250.4°F51.1°F48°F51.8°F
May 1351.1°F51.8°F46.9°F52.7°F
May 1452.2°F51.8°F46.4°F53.1°F
May 1551.8°F51.8°F47.8°F53.6°F
Day 2025 2024 Min Max
May 1652.7°F52.2°F48.6°F54.7°F
May 1755.4°F55.6°F47.3°F55.6°F
May 1856.3°F55.4°F48°F56.7°F
May 1956.3°F56.3°F48.9°F57.9°F
May 2056.3°F57.9°F49.6°F59.7°F
May 2156.5°F57.9°F50.7°F62.4°F
May 2256.7°F59.7°F50.5°F61°F
May 2357°F60.6°F51.4°F62.1°F
May 2457.2°F60.4°F51.8°F61.7°F
May 2556.8°F60.3°F51.8°F60.6°F
May 2655.6°F62.4°F52°F62.4°F
May 2757°F61.5°F53.4°F61.5°F
May 2857.4°F61.9°F52.7°F61.9°F
May 2956.8°F61°F53.1°F61°F
May 3056.3°F62.1°F53.1°F62.1°F
May 3155.9°F62.8°F53.2°F62.8°F
Grand Isle water temp chart in May

Average water temperature in Grand Isle in May over a decade

20162017201820192020
52°F49.5°F50.2°F49.5°F48.9°F
20212022202320242025
53.2°F52°F51.8°F54.1°F52.5°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 May?

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

AvrMinMax
Swanton53.1°F41.7°F66.6°F
Alexandria Bay48.7°F39.9°F59.5°F
Clayton49.6°F40.1°F60.6°F
Gananoque49.6°F39.2°F61°F
Dexter50.4°F40.3°F65.1°F
Henderson Harbor49.8°F40.1°F64.4°F
Pillar Point49.8°F40.1°F64.4°F
Sackets Harbor49.8°F40.1°F64.4°F
Southwick Beach48°F38.3°F62.6°F
Kingston49.3°F39.7°F62.8°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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