World sea water temperatures

Water temperature in Stony Brook in May

Is it warm enough to swim in Stony Brook in May? Average water temperature in Stony Brook in May is 54.3°F and therefore is not suitable for comfortable swimming. The warmest sea in Stony Brook in May is 65.3°F, and the coldest is 46.2°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Stony Brook

Changes water temperature in Stony Brook in May 2025, 2024

To get an accurate forecast for the water temperature in Stony Brook for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Stony Brook, 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 149.8°F52.7°F46.2°F52.7°F
May 250°F52.7°F47.1°F52.7°F
May 350.5°F52.2°F47.8°F52.2°F
May 450.5°F52.2°F48.4°F52.7°F
May 550.5°F52.2°F48.6°F52.5°F
May 652.7°F52.5°F48°F53.2°F
May 752.7°F52°F47.5°F53.6°F
May 851.8°F54.3°F48.4°F54.3°F
May 953.4°F54°F49.3°F55.6°F
May 1055.4°F54°F49.5°F56.8°F
May 1154.7°F53.1°F49.5°F58.3°F
May 1255.6°F53.8°F49.3°F57.2°F
May 1355°F55°F49.8°F59.4°F
May 1455.2°F54°F50.5°F59°F
May 1556.1°F54.1°F50.9°F58.8°F
Day 2025 2024 Min Max
May 1656.3°F54.5°F51.4°F58.6°F
May 1756.7°F54.9°F51.8°F58.6°F
May 1857.7°F55.2°F52.2°F58.8°F
May 1958.8°F55.4°F48°F59.4°F
May 2058.1°F55.2°F51.1°F59.2°F
May 2157.7°F56.7°F52.7°F59.5°F
May 2257.7°F58.6°F53.1°F60.3°F
May 2358.1°F59.9°F53.2°F60.4°F
May 2455.9°F60.6°F54°F60.6°F
May 2555.9°F62.2°F54.3°F62.2°F
May 2656.7°F60.3°F55°F60.6°F
May 2756.8°F60.4°F55.6°F61.9°F
May 2857.2°F62.4°F55.8°F63.7°F
May 2957.2°F62.6°F55.9°F64.6°F
May 3056.8°F63.1°F56.7°F64.2°F
May 3157.7°F64.2°F56.7°F65.3°F
Stony Brook water temp chart in May

Average water temperature in Stony Brook in May over a decade

20162017201820192020
54.1°F53.8°F54°F54.3°F52.5°F
20212022202320242025
54.9°F54°F56.5°F56.3°F55.2°F

Stony Brook sea state in May

Chart comparing the height of waves in Stony Brook in May 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 Stony Brook in May

Stony Brook 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
New York City56.7°F48.7°F66.9°F
Flax Pond Beach54.1°F46°F65.3°F
Fairfield54.3°F46.4°F65.3°F
Jennings Beach54.3°F46.4°F65.3°F
Sunken Meadow54.9°F46.6°F65.3°F
Smithtown54.9°F46.6°F65.3°F
West Meadow Beach54.9°F46.6°F65.3°F
Short Beach54.9°F46.6°F65.3°F
Cedar Beach Mt Sinai54°F45.7°F65.3°F
Westport54.5°F46.8°F65.3°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 Stony Brook 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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