World sea water temperatures

Water temperature in Crystal Lake (IL) in May

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Is it warm enough to swim in Crystal Lake in May? Average water temperature in Crystal Lake in May is 57°F and therefore is not suitable for comfortable swimming. The warmest water in Crystal Lake in May is 69.8°F, and the coldest is 41°F. To find out the water temperature today and in the coming days, go to Current water temperature in Crystal Lake

Changes water temperature in Crystal Lake in May 2025, 2024

To get an accurate forecast for the water temperature in Crystal Lake for any chosen month, compare two years within a 10 year range using the chart below.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024
May 155.4°F62.6°F
May 255.4°F62.6°F
May 353.6°F62.6°F
May 451.8°F60.8°F
May 553.6°F60.8°F
May 653.6°F60.8°F
May 753.6°F59°F
May 855.4°F59°F
May 955.4°F59°F
May 1057.2°F59°F
May 1159°F60.8°F
May 1259°F59°F
May 1362.6°F59°F
May 1464.4°F59°F
May 1564.4°F62.6°F
Day 2025 2024
May 1664.4°F62.6°F
May 1762.6°F64.4°F
May 1860.8°F66.2°F
May 1957.2°F66.2°F
May 2055.4°F68°F
May 2151.8°F69.8°F
May 2251.8°F69.8°F
May 2351.8°F66.2°F
May 2451.8°F68°F
May 2553.6°F68°F
May 2655.4°F66.2°F
May 2757.2°F64.4°F
May 2859°F60.8°F
May 2959°F60.8°F
May 3059°F60.8°F
May 3162.6°F60.8°F

Crystal Lake 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

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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 Crystal Lake 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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