World sea water temperatures

Water temperature in Monroe Harbor (IL) in January

Is it warm enough to swim in Monroe Harbor in January? Average water temperature in Monroe Harbor in January is 35.2°F and therefore is not suitable for comfortable swimming. The warmest water in Monroe Harbor in January is 41.7°F, and the coldest is 30.4°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Monroe Harbor

Changes water temperature in Monroe Harbor in January 2025, 2024

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

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
January 136.3°F40.5°F32.7°F40.5°F
January 237.9°F38.8°F32.4°F39.9°F
January 336.7°F38.8°F31.8°F39.7°F
January 436.3°F39°F31.1°F39.9°F
January 536.1°F40.1°F31.3°F40.3°F
January 635.8°F39.6°F31.1°F39.6°F
January 735.8°F39°F31.6°F39°F
January 833.4°F38.5°F31.3°F38.5°F
January 934.5°F37.9°F31.3°F38.3°F
January 1034.3°F37.8°F32°F38.7°F
January 1134.2°F38.8°F30.4°F39.6°F
January 1234.2°F40.6°F30.9°F40.6°F
January 1334°F41.2°F31.6°F41.2°F
January 1434°F40.6°F31.6°F40.6°F
January 1534°F39.2°F31.5°F39.2°F
Day 2025 2024 Min Max
January 1634.2°F39°F31.5°F39°F
January 1734.5°F37.4°F32°F37.9°F
January 1834.5°F37.2°F30.7°F37.6°F
January 1934.5°F36.9°F31.6°F37.2°F
January 2034°F36.1°F32.2°F36.9°F
January 2134°F36.3°F32°F36.7°F
January 2233.8°F36.1°F32.2°F40.5°F
January 2333.8°F36°F31.6°F39.4°F
January 2434°F35.8°F31.8°F39.7°F
January 2534°F35.6°F31.5°F39.2°F
January 2633.8°F35.4°F31.6°F39°F
January 2733.8°F35.2°F31.8°F41.7°F
January 2835.2°F34.5°F31.3°F39.9°F
January 2934.7°F34.2°F31.5°F37.4°F
January 3033.1°F34.3°F31.5°F37.4°F
January 3133.8°F34.9°F31.6°F37.6°F
Monroe Harbor water temp chart in January

Average water temperature in Monroe Harbor in January over a decade

20162017201820192020
35.6°F34.9°F32.9°F35.6°F35.6°F
20212022202320242025
35.6°F36°F36°F37.6°F34.7°F

Monroe Harbor sea state in January

Chart comparing the height of waves in Monroe Harbor in January 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 Monroe Harbor in January

Monroe Harbor 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 January?

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

AvrMinMax
Oak Street Beach35.1°F30.2°F41.7°F
North Avenue Beach35.1°F30.2°F41.7°F
Montrose Beach35.4°F30.4°F42.1°F
Foster Beach35.4°F30.4°F42.1°F
South Shore Beach35.2°F30.4°F44.6°F
Calumet Park35.4°F30.4°F45.5°F
Hammond35.6°F30.6°F45.5°F
Wilmette35.6°F30.4°F41.9°F
Winnetka35.4°F30.4°F41.9°F
Gary35.6°F30.4°F43.3°F

Illinois photo gallery

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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 Monroe Harbor 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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