World sea water temperatures

Water temperature in Big Bay State Park (WI) in May

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Is it warm enough to swim in Big Bay State Park in May? Average water temperature in Big Bay State Park in May is 41.4°F and therefore is not suitable for comfortable swimming. The warmest water in Big Bay State Park in May is 51.6°F, and the coldest is 32.7°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Big Bay State Park

Changes water temperature in Big Bay State Park in May 2025, 2024

To get an accurate forecast for the water temperature in Big Bay State Park for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Big Bay State Park, 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 138.5°F42.8°F34°F46.6°F
May 238.5°F38.8°F34.7°F46°F
May 340.8°F39.7°F34.9°F41.9°F
May 440.6°F42.8°F32.9°F42.8°F
May 540.1°F39.4°F32.7°F42.1°F
May 640.6°F38.8°F33.1°F41.9°F
May 740.3°F40.6°F33.6°F43.3°F
May 841.5°F38.7°F33.8°F42.8°F
May 942.4°F39.6°F35.1°F43.7°F
May 1041.4°F41.2°F34°F43.7°F
May 1142.8°F41.7°F34.2°F43.3°F
May 1244.8°F43.5°F34.5°F46.2°F
May 1344.4°F43.9°F34.7°F44.4°F
May 1444.6°F43.7°F34.2°F45.7°F
May 1541.5°F45.1°F34.9°F45.3°F
Day 2025 2024 Min Max
May 1640.8°F45°F35.2°F45.9°F
May 1742.6°F44.8°F35.6°F46°F
May 1843.2°F44.8°F36.1°F46.6°F
May 1941.4°F44.8°F36.7°F48.7°F
May 2039.7°F45.1°F37.2°F48°F
May 2140.3°F44.2°F37.2°F48.6°F
May 2241.7°F44.4°F37.8°F49.1°F
May 2340.6°F44.1°F38.7°F49.1°F
May 2442.4°F45.3°F38.3°F49.5°F
May 2545.5°F45.3°F38.1°F48.6°F
May 2648.2°F44.6°F38.1°F48.2°F
May 2748°F44.4°F38.7°F51.6°F
May 2848.7°F45°F39.2°F48.7°F
May 2950°F48.2°F39.7°F50.7°F
May 3051.4°F48.9°F39.7°F51.4°F
May 3151.4°F47.1°F37.4°F51.4°F
Big Bay State Park water temp chart in May

Average water temperature in Big Bay State Park in May over a decade

20162017201820192020
45°F41.2°F38.8°F40.5°F41.7°F
20212022202320242025
44.2°F38.1°F37.4°F43.3°F43.2°F

Big Bay State Park sea state in May

Chart comparing the height of waves in Big Bay State Park 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 Big Bay State Park in May

Big Bay State Park 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
Herbster38.5°F33.1°F46°F
Port Wing38.7°F33.3°F46.8°F
Beaver Bay36.9°F32.7°F41.7°F
Silver Bay36.9°F32.5°F41.7°F
Two Harbors37.4°F33.1°F46.4°F
Knife River37.9°F32.9°F48.9°F
French River38.8°F32.9°F51.1°F
Duluth42.1°F34.3°F54.9°F
Park Point42.1°F34.3°F54.9°F
Grand Portage36.5°F32.7°F41.2°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 Big Bay State Park 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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