October is a popular month to ask about Grand Haven State because conditions can shift week to week along this coast. Expect the water near 25.0°C, with daily variation from wind, tides and recent storms. We refresh the live value from Open-Meteo Marine every hour, so the headline above always reflects the current state of the Lake Michigan.
Grand Haven State sea temperature in October — averages 25.0°C
The sea at Grand Haven State in United States averages 25.0°C during October, based on long-run climatology for the Lake Michigan. Use the live reading below for today's actual water and the monthly grid to compare with the rest of the year.
Average sea · October
25.0°C
hot · Excellent
Live water now
…
Recommended wetsuit
No wetsuit
At 25.0°C the water is warm enough to swim and surf in just a swimsuit or boardshorts.
Monthly comparison
Yes — ideal swimming weather · Grand Haven State
Can you swim at Grand Haven State in June? — 26.0°C water26.0°CCan you swim at Grand Haven State in July? — 28.0°C water28.0°CCan you swim at Grand Haven State in August? — 28.0°C water28.0°CCan you swim at Grand Haven State in September? — 27.0°C water27.0°CCan you swim at Grand Haven State in October? — 25.0°C water25.0°CCan you swim at Grand Haven State in November? — 22.0°C water22.0°C
Frequently asked questions
What is the average sea temperature at Grand Haven State in October?
Grand Haven State averages 25.0°C in October, based on long-run climatology for the Lake Michigan.
Is the sea warm enough to swim at Grand Haven State in October?
Yes, most swimmers find 25.0°C comfortable for unrestricted swimming.
Do I need a wetsuit at Grand Haven State in October?
No wetsuit needed.