Bay City (MI) water temp

This data the coastal Bay City water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current water temperature in Bay City

Water temperature in Bay City today is 69.4°F. Based on our historical data over a period of ten years, the warmest water in this day in the Lake Huron near Bay City was recorded in 2018 and was 75.4°F, and the coldest was recorded in 2017 at 66.7°F. Water temperature in Bay City is expected to drop to 68.2°F in the next 10 days. September average water temperature in Bay City is 68.2°F, the minimum temperature is 59.7°F, and the maximum is 75.7°F.

The swimming season in Bay City lasts from June to September. During those months, Bay City water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Bay City in winter reaches 33.6°F, in spring 45.1°F, in summer the average temperature rises to 72.7°F, and in autumn it is 56.8°F.

Bay City water temperature now

Surf Forecast in Bay City for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Bay City. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Bay City. Data in table shown for September 5, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Bay City

Bay City weather forecast

Current temperature and weather

Data in a table show Bay City temperature today (September 5, 2025). For more information and forecast for a few days, go to the weather forecast Bay City.

0-3 h	3-6 h	6-9 h	9-12 h
46.8°F	50.9°F	54.9°F	59.7°F

12-15 h	15-18 h	18-21 h	21-24 h
64.6°F	64.9°F	63.1°F	53.2°F

Bay City water temperature by month

These figures shows the average, minimum and maximum monthly water temperature in Bay City. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Bay City on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Bay City

The nearest beaches and cities from Bay City with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Linwood	69.8°F	64.4°F		1' 5"
Sebewaing	69.1°F	66.2°F		1' 6"
Au Gres	69.4°F	64.4°F		1' 7"
Tawas City	66.9°F	62.6°F		1' 11"
Oak Beach	67.3°F	64.4°F		2' 0"
Port Crescent	67.3°F	64.4°F		2' 0"
East Tawas	67.1°F	62.6°F		1' 10"
Port Austin	67.3°F	64.4°F		2' 0"
Oscoda	66.7°F	64.4°F		2' 2"
Port Hope	67.5°F	66.2°F		1' 5"

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Our report for Bay City 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.