World sea water temperatures

Water temperature in Wilmette (IL) in December

Is it warm enough to swim in Wilmette in December? Average water temperature in Wilmette in December is 40.6°F and therefore is not suitable for comfortable swimming. The warmest water in Wilmette in December is 46.4°F, and the coldest is 32.5°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Wilmette

Changes water temperature in Wilmette in December 2024, 2023

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

You can choose any other years:

Year 1:   Year 2:


Day 2024 2023 Min Max
December 146.4°F45.3°F39.9°F46.4°F
December 245.9°F45.3°F39.9°F46.2°F
December 345.5°F45.3°F40.1°F46.2°F
December 445.3°F45.1°F39.9°F46°F
December 545.1°F45.1°F39.7°F45.5°F
December 644.6°F45.7°F38.8°F46°F
December 742.3°F44.1°F38.3°F45.7°F
December 840.3°F43.7°F38.3°F45.3°F
December 939.6°F43.5°F38.5°F44.6°F
December 1039.4°F43.3°F37.8°F44.6°F
December 1139.2°F43°F36.3°F44.1°F
December 1239°F42.3°F36.3°F44.1°F
December 1338.8°F41.4°F36.3°F43.7°F
December 1439°F41.7°F36.7°F44.2°F
December 1539.2°F41.5°F35.6°F44.1°F
Day 2024 2023 Min Max
December 1639.6°F41.7°F35.4°F44.1°F
December 1737.8°F42.1°F35.2°F44.2°F
December 1838.1°F42.1°F35.6°F43.9°F
December 1938.3°F42.4°F35.8°F43.3°F
December 2038.8°F42.3°F36°F43.9°F
December 2137.9°F41°F35.8°F42.8°F
December 2237.6°F40.3°F36.5°F42.1°F
December 2337°F39.4°F36.1°F42.3°F
December 2436.5°F40.3°F34.9°F43.5°F
December 2536°F39.6°F34.5°F41.7°F
December 2635.4°F40.5°F33.8°F40.8°F
December 2734.9°F42.1°F33.3°F42.1°F
December 2836.1°F41.7°F33.8°F41.7°F
December 2936.3°F41.5°F34°F41.5°F
December 3036.7°F41.2°F32.5°F41.2°F
December 3136.9°F41°F32.9°F41°F
Wilmette water temp chart in December

Average water temperature in Wilmette in December over a decade

20152016201720182019
43.2°F41.4°F40.3°F39.6°F38.1°F
20202021202220232024
40.3°F42.3°F41.2°F42.4°F39.4°F

Wilmette sea state in December

Chart comparing the height of waves in Wilmette in December 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 Wilmette in December

Wilmette water temperature during other months:

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

Water temperature in Lake Michigan in December

Where is the warm sea water in December?

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

AvrMinMax
Winnetka40.3°F32.5°F46.2°F
Glencoe40.5°F32.9°F46.2°F
Evanston40.8°F32.5°F47.1°F
Rogers Park40.8°F32.5°F47.1°F
Montrose Beach40.6°F32.4°F47.3°F
Foster Beach40.6°F32.4°F47.3°F
Highland Park40.6°F33.1°F46.4°F
Lake Forest40.8°F33.4°F46.6°F
Oak Street Beach40.6°F32.2°F47.5°F
North Avenue Beach40.6°F32.2°F47.5°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 Wilmette 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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