This data the coastal Petoskey 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.
Water temperature in Petoskey today is 63.5°F. Based on our historical data over a period of ten years, the warmest water in this day in Petoskey was recorded in 2022 and was 70.5°F, and the coldest was recorded in 2017 at 64.6°F. Water temperature in Petoskey is expected to rise to 66.4°F in the next 10 days. September average water temperature in Petoskey is 66.9°F, the minimum temperature is 61.5°F, and the maximum is 72°F.
The swimming season in Petoskey lasts from July to September. During those months, Petoskey water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Petoskey in winter reaches 36.9°F, in spring 36.3°F, in summer the average temperature rises to 63.9°F, and in autumn it is 58.1°F.
September 11, 2025 |
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today temp |
63.5°F |
September 10, 2025 |
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yesterday temp |
63.3°F |
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 Petoskey. 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 Petoskey. Data in table shown for September 11, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)
0-3 h | 3-6 h | 6-9 h | 9-12 h |
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0' 3" | 0' 2" | 0' 2" | 0' 1" |
0.07 m | 0.05 m | 0.04 m | 0.03 m |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
0' 1" | 0' 1" | 0' 1" | 0' 2" |
0.03 m | 0.02 m | 0.02 m | 0.04 m |
Data in a table show Petoskey temperature today (September 11, 2025). For more information and forecast for a few days, go to the weather forecast Petoskey.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
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58.3°F | 55°F | 54.1°F | 56.5°F |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
![]() | ![]() | ![]() | ![]() |
63.3°F | 68.9°F | 69.3°F | 61°F |
You may also be interested in other sections of our site for Petoskey: Sunrise and Sunset, Tides
These figures shows the average, minimum and maximum monthly water temperature in Petoskey. 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 Petoskey 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
Month | Avr | Min | Max | |
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January | 36.1°F | 30.9°F | 41.4°F | cold |
Water temperature in Petoskey in January | ||||
February | 33.1°F | 30.7°F | 36°F | cold |
Water temperature in Petoskey in February | ||||
March | 32.7°F | 30.9°F | 35.6°F | cold |
Water temperature in Petoskey in March | ||||
April | 34.7°F | 30°F | 40.5°F | cold |
Water temperature in Petoskey in April | ||||
May | 41.5°F | 34.2°F | 54°F | cold |
Water temperature in Petoskey in May | ||||
June | 54.5°F | 39.9°F | 67.1°F | cold |
Water temperature in Petoskey in June | ||||
July | 67.1°F | 55.6°F | 73.6°F | cold |
Water temperature in Petoskey in July | ||||
August | 69.8°F | 60.6°F | 74.1°F | warm |
Water temperature in Petoskey in August | ||||
September | 66.9°F | 61.5°F | 72°F | cold |
Water temperature in Petoskey in September | ||||
October | 58.3°F | 48.7°F | 66.2°F | cold |
Water temperature in Petoskey in October | ||||
November | 49.3°F | 39.7°F | 56.3°F | cold |
Water temperature in Petoskey in November | ||||
December | 41.5°F | 35.1°F | 48.6°F | cold |
Water temperature in Petoskey in December |