World sea water temperatures

Water temperature in Herbster (WI) in May

Is it warm enough to swim in Herbster in May? Average water temperature in Herbster in May is 38.5°F and therefore is not suitable for comfortable swimming. The warmest water in Herbster in May is 46°F, and the coldest is 33.1°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Herbster

Changes water temperature in Herbster in May 2025, 2024

To get an accurate forecast for the water temperature in Herbster for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Herbster, 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 136.7°F39°F33.4°F39.7°F
May 236.5°F37.9°F33.6°F39.9°F
May 337.9°F39.4°F33.8°F39.4°F
May 438.3°F38.7°F33.1°F38.8°F
May 539°F40.1°F33.6°F40.1°F
May 637.9°F37.8°F33.4°F37.9°F
May 737.8°F36.9°F33.6°F40.5°F
May 838.5°F38.5°F35.1°F40.1°F
May 938.7°F40.1°F38.7°F40.1°F
May 1037.8°F38.1°F34.3°F40.6°F
May 1138.3°F39.9°F34.3°F41.9°F
May 1240.6°F41°F36.3°F41°F
May 1341°F42.4°F34°F44.6°F
May 1438.5°F41.5°F34.2°F43.7°F
May 1538.1°F41.2°F34.2°F44.1°F
Day 2025 2024 Min Max
May 1638.5°F42.8°F36.5°F44.4°F
May 1738.3°F41.7°F37.2°F46°F
May 1838.5°F41.9°F34.5°F44.8°F
May 1937.2°F42.1°F37.2°F43.2°F
May 2034.7°F41.7°F34.7°F42.4°F
May 2134.7°F40.1°F34.7°F42.8°F
May 2237.8°F40.6°F34.7°F42.4°F
May 2336.9°F41.5°F34.9°F43.9°F
May 2438.1°F41.7°F38.1°F41.7°F
May 2541°F41.5°F35.2°F41.5°F
May 2642.4°F41.2°F35.4°F42.4°F
May 2741.5°F41.7°F35.8°F43.7°F
May 2841.5°F44.8°F36.1°F44.8°F
May 2946°F45.1°F37.4°F46°F
May 3045.9°F44.4°F37.2°F45.9°F
May 3143.7°F41.9°F37.2°F43.7°F
Herbster water temp chart in May

Average water temperature in Herbster in May over a decade

20162017201820192020
39.4°F38.5°F37.4°F37.4°F39.6°F
20212022202320242025
41.9°F35.6°F36.5°F40.8°F39°F

Herbster 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
Grand Marais36.7°F32.7°F41°F
Ontonagon39.2°F33.1°F48.7°F
Grand Portage36.5°F32.7°F41.2°F
McLain State Park39.2°F34.3°F49.5°F
Baraga39.4°F34.2°F50.7°F
Calumet38.8°F33.8°F49.3°F
Houghton38.7°F33.6°F48.2°F
L'Anse39.6°F34.3°F51.1°F
Isle Royale36.7°F32.5°F42.4°F
Kabetogama47.8°F38.8°F60.8°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 Herbster 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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