World sea water temperatures

Water temperature in Calumet (MI) in May

Is it warm enough to swim in Calumet in May? Average water temperature in Calumet in May is 38.8°F and therefore is not suitable for comfortable swimming. The warmest water in Calumet in May is 49.3°F, and the coldest is 33.8°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Calumet

Changes water temperature in Calumet in May 2025, 2024

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

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
May 136.3°F38.1°F34.3°F38.3°F
May 236.3°F38.3°F34.3°F39.4°F
May 337.6°F38.5°F34.5°F39°F
May 438.8°F37.6°F34.7°F38.8°F
May 538.7°F39°F34°F39°F
May 639.2°F39.2°F34.3°F39.2°F
May 738.5°F39°F34.9°F39°F
May 837.8°F39.4°F34.7°F39.4°F
May 938.8°F38.5°F36.1°F39.4°F
May 1038.7°F38.1°F35.4°F39.4°F
May 1138.3°F37.9°F35.2°F39.4°F
May 1239.7°F39.7°F35.2°F40.3°F
May 1341.4°F41.5°F35.8°F41.5°F
May 1439.7°F43°F34.3°F43°F
May 1539.9°F40.1°F34.5°F40.6°F
Day 2025 2024 Min Max
May 1639.2°F39.6°F33.8°F42.8°F
May 1738.7°F41.2°F34.3°F42.3°F
May 1838.7°F41.9°F34.7°F42.8°F
May 1939.4°F41.2°F35.2°F43.5°F
May 2038.7°F41.7°F35.6°F45.9°F
May 2138.1°F42.1°F35.4°F45.7°F
May 2238.1°F42.3°F37.2°F46.2°F
May 2338.5°F44.1°F37°F46.8°F
May 2439.2°F44.6°F37.4°F47.3°F
May 2539.7°F44.4°F36.5°F48.4°F
May 2640.3°F44.6°F37.2°F48°F
May 2739.9°F45.9°F37°F47.7°F
May 2839.4°F45°F37.6°F48.7°F
May 2939.2°F47.7°F38.3°F47.8°F
May 3040.6°F49.3°F38.1°F49.3°F
May 3138.5°F48°F38.1°F48°F
Calumet water temp chart in May

Average water temperature in Calumet in May over a decade

20162017201820192020
41.9°F37.9°F40.1°F37.6°F37.6°F
20212022202320242025
39.6°F36.5°F38.8°F41.7°F38.8°F

Calumet sea state in May

Chart comparing the height of waves in Calumet in May 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 Calumet in May

Calumet 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

Temperature in neighboring cities

The nearest locations with the average water temperature in May. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
McLain State Park39.2°F34.3°F49.5°F
Isle Royale36.7°F32.5°F42.4°F
Harvey39°F32.2°F49.1°F
Marquette38.1°F32.2°F45.9°F
Grand Marais36.7°F32.7°F41°F
Apostle Islands39.6°F34°F47.8°F
Rock River38.7°F32.9°F47.8°F
Lutsen36.9°F32.9°F41.4°F
Au Train38.7°F33.1°F47.8°F
Christmas38.7°F33.4°F48.2°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 Calumet 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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