World sea water temperatures

Water temperature in Winnetka (IL) in May

Is it warm enough to swim in Winnetka in May? Average water temperature in Winnetka in May is 50.7°F and therefore is not suitable for comfortable swimming. The warmest water in Winnetka in May is 63.7°F, and the coldest is 42.3°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Winnetka

Changes water temperature in Winnetka in May 2025, 2024

To get an accurate forecast for the water temperature in Winnetka for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Winnetka, 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 150°F44.6°F42.3°F50°F
May 250.7°F45.1°F43.5°F51.4°F
May 350.7°F46.9°F43.3°F52.3°F
May 450°F47.7°F44.4°F54.5°F
May 549.5°F50°F44.2°F56.7°F
May 650.7°F51.8°F44.1°F56.8°F
May 751.1°F54.3°F44.8°F55.9°F
May 851.6°F55°F45.1°F56.7°F
May 951.6°F55.8°F45.9°F59.7°F
May 1052.5°F55°F46°F59.5°F
May 1152.5°F56.3°F45.7°F57.6°F
May 1252.7°F55.8°F45.3°F55.8°F
May 1351.6°F56.7°F45.5°F56.7°F
May 1451.1°F55.8°F46°F55.8°F
May 1550.7°F55.8°F46.6°F55.8°F
Day 2025 2024 Min Max
May 1653.1°F54.7°F46.8°F54.9°F
May 1752.3°F55.2°F46.6°F55.2°F
May 1854.5°F57.6°F46.6°F57.6°F
May 1955.6°F57.9°F46.9°F57.9°F
May 2054.5°F58.6°F46.8°F58.6°F
May 2154°F59°F46.9°F59°F
May 2252°F59.5°F47.1°F59.5°F
May 2352.9°F60.1°F48.7°F60.1°F
May 2452.2°F59°F49.1°F59°F
May 2552.7°F59.5°F49.1°F59.5°F
May 2654.9°F58.8°F49.3°F61.9°F
May 2753.8°F57.6°F49.1°F63.3°F
May 2853.1°F60.4°F49.3°F63.5°F
May 2953.2°F59.5°F49.3°F62.8°F
May 3055.4°F57.7°F49.1°F62.4°F
May 3157°F57.9°F49.3°F63.7°F
Winnetka water temp chart in May

Average water temperature in Winnetka in May over a decade

20162017201820192020
48.9°F48.4°F50.9°F51.8°F47.8°F
20212022202320242025
52.7°F51.1°F50.5°F55.4°F52.5°F

Winnetka sea state in May

Chart comparing the height of waves in Winnetka 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 Winnetka in May

Winnetka water temperature during other months:

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

Michigan Lake water temperature in May

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
Glencoe50.2°F41.9°F62.8°F
Rogers Park50.2°F42.3°F64.2°F
Highland Park49.8°F41.5°F61.5°F
Montrose Beach50.7°F42.6°F64.8°F
Foster Beach50.7°F42.6°F64.8°F
Lake Forest49.3°F41.4°F60.4°F
Oak Street Beach51.8°F43.7°F65.7°F
North Avenue Beach51.8°F43.7°F65.7°F
Chicago51.4°F43.3°F65.5°F
Ohio Street Beach51.4°F43.3°F65.5°F

Illinois photo gallery

  • Dead River Closed Mouth Sand Band
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  • Montrose Beach pier

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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 Winnetka 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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