World sea water temperatures

Water temperature in Grand Haven (MI) in September

Is it warm enough to swim in Grand Haven in September? Average water temperature in Grand Haven in September is 66.9°F and therefore is not suitable for comfortable swimming. The warmest water in Grand Haven in September is 76.3°F, and the coldest is 53.8°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Grand Haven

Changes water temperature in Grand Haven in September 2025, 2024

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

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
September 167.1°F72.3°F59°F76.3°F
September 267.8°F68°F65.8°F73.8°F
September 368.2°F68°F66.6°F73.4°F
September 467.6°F67.5°F66.6°F72.5°F
September 567.6°F68.2°F63.5°F73°F
September 667.6°F67.8°F62.2°F72.9°F
September 767.6°F67.6°F62.8°F72.3°F
September 866.7°F67.6°F59.4°F71.6°F
September 967.5°F64°F59.9°F72.1°F
September 1067.5°F66.6°F63°F72°F
September 1167.6°F67.6°F64.6°F72°F
September 1267.5°F69.6°F63.7°F71.4°F
September 1368°F69.4°F63.3°F71.6°F
September 1467.5°F68.9°F62.1°F71.4°F
September 1568°F70°F60.6°F71.1°F
Day 2025 2024 Min Max
September 1667.1°F70.2°F57.7°F71.1°F
September 1767.1°F69.4°F58.1°F71.1°F
September 1867.6°F69.4°F59.4°F71.6°F
September 1968.2°F69.8°F61.5°F71.6°F
September 2066.9°F69.8°F60.6°F71.2°F
September 2166.4°F70.3°F62.1°F71.1°F
September 2266.6°F70.2°F58.8°F70.2°F
September 2366.7°F69.3°F57°F70.2°F
September 2466.2°F68.2°F57.7°F70°F
September 2565.3°F67.1°F59.5°F70°F
September 2665.5°F65.5°F57.9°F69.8°F
September 2766.2°F65.7°F53.8°F68.5°F
September 2866.6°F64.6°F58.5°F66.9°F
September 2967.1°F63.5°F60.3°F67.1°F
September 3066.9°F63.3°F60.1°F67.3°F
Grand Haven water temp chart in September

Average water temperature in Grand Haven in September over a decade

20162017201820192020
69.3°F66.6°F65.7°F65.7°F66.2°F
20212022202320242025
69.6°F68.5°F66.6°F68°F

Grand Haven sea state in September

Chart comparing the height of waves in Grand Haven in September 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 Grand Haven in September

Grand Haven 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 Lake Michigan in September

Where is the warm sea water in September?

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

AvrMinMax
Kirk Park67.3°F53.2°F76.3°F
Norton Shores66.7°F57°F75.6°F
Hoffmaster State Park66.7°F57°F75.6°F
Port Sheldon67.3°F55°F76.1°F
West Olive67.3°F55°F76.1°F
Muskegon66.7°F57°F75.4°F
Pere Marquette66.7°F57°F75.4°F
Ottawa Beach67.6°F59°F76.1°F
Macatawa67.6°F59°F76.1°F
Sylvan Beach66.9°F59.4°F75.2°F

Grand Haven photo gallery

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Grand Haven has a "Blue Flag" [1] award

Warning! Possible Rip Currents swim with care. This place is subject to rip currents (fast moving outward water)

Current rating: 4,8 (5 votes cast)

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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 Grand Haven 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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