World sea water temperatures

Water temperature in Chicago (IL) in April

Is it warm enough to swim in Chicago in April? Average water temperature in Chicago in April is 42.4°F and therefore is not suitable for comfortable swimming. The warmest water in Chicago in April is 50.4°F, and the coldest is 34.9°F. Average high air temperature in Chicago in April is 59°F, and average low temperature is 42°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Chicago

Changes water temperature in Chicago in April 2025, 2024

To get an accurate forecast for the water temperature in Chicago for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Chicago, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of April.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
April 141.7°F41.2°F35.6°F43.5°F
April 241.5°F40.8°F34.9°F45.3°F
April 341.4°F40.5°F35.1°F44.4°F
April 442.1°F40.5°F35.2°F43.7°F
April 541.5°F41.2°F36.3°F43.9°F
April 643.2°F41.7°F36.5°F44.6°F
April 743.7°F41.9°F36.7°F44.4°F
April 842.1°F42.3°F36.5°F45.5°F
April 942.1°F42.3°F36.7°F45.1°F
April 1041.9°F42.8°F36.9°F44.6°F
April 1141.9°F42.4°F37.4°F44.8°F
April 1242.6°F44.2°F38.3°F45.3°F
April 1342.4°F44.6°F38.5°F45°F
April 1443.9°F45.1°F38.5°F45.7°F
April 1543.9°F46.9°F38.7°F46.9°F
Day 2025 2024 Min Max
April 1644.8°F46.9°F38.8°F46.9°F
April 1744.1°F46.8°F38.7°F46.8°F
April 1843.7°F47.7°F39°F47.7°F
April 1943.5°F47.7°F38.7°F47.7°F
April 2045.1°F47.7°F39°F47.7°F
April 2147.7°F48.4°F39.6°F48.4°F
April 2247.1°F48.2°F39°F48.2°F
April 2346.9°F49.6°F39.7°F49.6°F
April 2446.4°F48.2°F40.6°F48.2°F
April 2547.3°F45.5°F40.6°F48.2°F
April 2647.7°F43.2°F41°F48.6°F
April 2746.8°F43.5°F41.2°F48.4°F
April 2848°F43.7°F42.1°F48°F
April 2948.6°F45.3°F42.4°F48.9°F
April 3050.4°F45.1°F42.8°F50.4°F
Chicago water temp chart in April

Average water temperature in Chicago in April over a decade

20162017201820192020
42.6°F41.7°F38.8°F41.9°F42.3°F
20212022202320242025
45.1°F41.5°F43.5°F44.4°F44.4°F

Chicago sea state in April

Chart comparing the height of waves in Chicago in April 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 Chicago in April

Weather and climate in Chicago in April

This data display average monthly climate indicators in Chicago in April based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

  • Average HIGH temperature59°F
  • Average LOW temperature42°F
  • Average humidity
    65
  • Average rainfall days11 days
  • Average rainfall91mm/3.6''
  • Average daylight13h
  • Average sunshine7.2h
  • Average UV index6

Chicago water temperature during other months:

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

Lake Michigan temperature water in April

Where is the warm sea water in April?

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

AvrMinMax
Ohio Street Beach42.4°F34.9°F50.4°F
Monroe Harbor42.4°F34.9°F50.4°F
Oak Street Beach42.8°F35.1°F51.4°F
North Avenue Beach42.8°F35.1°F51.4°F
Oakwood Beach42.8°F34.9°F51.4°F
Montrose Beach42.1°F34.9°F49.6°F
Foster Beach42.1°F34.9°F49.6°F
South Shore Beach42.8°F34.7°F50.9°F
Evanston41.7°F34.7°F48.9°F
Rogers Park41.7°F34.7°F48.9°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 Chicago 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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