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Illinois water temperature today

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Water temperature throughout Illinois is not yet warm enough for swimming and does not exceed 68°F. The warmest water temperature in Illinois today is 63.5°F (Calumet Park), and the coldest temperature is 56.3°F (Oak Street Beach).

Illinois water temperature right now

Below are the cities and resorts in Illinois with the values of water temperature today and yesterday. Also indicated are the maximum and minimum water temperatures that were recorded this month for the last ten years. Presented weather data are now available for each of the resorts. For more detailed information about water temperature, surf forecast, weather and time of sunrise and sunset in any specific area of your interest, just click on a city name. For ease of search, all places are also grouped by the first letter of the name.

 
today
yesterday
minimum
maximum
weather
63.5°F
65.5°F
51.4°F
68.9°F
68°F 
68°F
66.2°F
48.2°F
73.4°F
77°F 
58.5°F
58.8°F
49.1°F
68.7°F
66.2°F 
59°F
59°F
39.2°F
68°F
64.4°F 

Illinois wave forecast

Today, the highest waves along the entire coast of Illinois are expected at Lake Forest, reaching a height of 1' 7" (0.49 m). The calmest seas can be found at South Shore Beach, with an average wave height of 1' 1" (0.33 m). If you want to see the 10-day sea forecast, choose the city you are interested in.

Illinois water temperature by month

To find out what the water temperature was in Illinois any day over a period of the last ten years, select the month.

Where is the warmest sea water in the world?

If you want to plan a vacation on the beach and enjoy the warm sea, choose the day of the year, region and the minimum comfortable sea/ocean temperature that interests you. As a result, you will get a list of countries and cities in which the average sea temperature or maximum temperature on this day over the past 10 years exceeds your chosen value

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Hottest water temperatures

Top places with the warmest water in Illinois today. In addition of the water temperature, also shown air temperature, weather conditions and the wave heights on the coast

WaterWeatherWave
Calumet Park63.5°F68°F1' 1"
Highland Park63°F64.4°F1' 5"
Zion62.8°F64.4°F1' 3"
Illinois Beach State Park62.8°F64.4°F1' 3"
South Shore Beach62.8°F68°F1' 1"

Illinois photo gallery

  • South Boulevard Beach August 2025
  • Montrose Beach pier
  • Montrose Beach pier
  • Lighthouse Beach

If you have interesting photos of this place, you can upload them here. Photos will be available to all users after verification by the moderator.

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Our report for United States 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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