This data the coastal Alpena 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 Alpena today is 64°F. Based on our historical data over a period of ten years, the warmest water in this day in the Lake Huron near Alpena was recorded in 2012 and was 70.3°F, and the coldest was recorded in 2019 at 59.5°F. Water temperature in Alpena is expected to rise to 64.4°F in the next 10 days. September average water temperature in Alpena is 64.2°F, the minimum temperature is 55°F, and the maximum is 71.6°F.
The swimming season in Alpena lasts from July to August. During those months, Alpena water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Alpena in winter reaches 35.4°F, in spring 39.4°F, in summer the average temperature rises to 64.6°F, and in autumn it is 55.4°F.
September 5, 2025 |
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today temp |
64°F |
September 4, 2025 |
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yesterday temp |
66°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 Alpena. 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 Alpena. 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)
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
0' 10" | 1' 2" | 1' 11" | 3' 8" |
0.25 m | 0.35 m | 0.59 m | 1.13 m |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
4' 1" | 3' 9" | 3' 0" | 2' 4" |
1.24 m | 1.15 m | 0.92 m | 0.7 m |
Data in a table show Alpena temperature today (September 5, 2025). For more information and forecast for a few days, go to the weather forecast Alpena.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
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56.1°F | 55.4°F | 55.9°F | 57.7°F |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
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60.1°F | 60.1°F | 58.6°F | 56.5°F |
You may also be interested in other sections of our site for Alpena: Sunrise and Sunset, Tides
These figures shows the average, minimum and maximum monthly water temperature in Alpena. 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 Alpena 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 | 34.5°F | 30.2°F | 38.3°F | cold |
Water temperature in Alpena in January | ||||
February | 32.7°F | 30.2°F | 35.6°F | cold |
Water temperature in Alpena in February | ||||
March | 33.6°F | 30.7°F | 38.3°F | cold |
Water temperature in Alpena in March | ||||
April | 37.8°F | 31.8°F | 49.1°F | cold |
Water temperature in Alpena in April | ||||
May | 46.8°F | 36.3°F | 57.9°F | cold |
Water temperature in Alpena in May | ||||
June | 57.6°F | 49.3°F | 67.1°F | cold |
Water temperature in Alpena in June | ||||
July | 67.1°F | 58.8°F | 74.5°F | cold |
Water temperature in Alpena in July | ||||
August | 69.3°F | 61.7°F | 75.7°F | warm |
Water temperature in Alpena in August | ||||
September | 64.2°F | 55°F | 71.6°F | cold |
Water temperature in Alpena in September | ||||
October | 55.4°F | 47.8°F | 66.4°F | cold |
Water temperature in Alpena in October | ||||
November | 46.8°F | 38.3°F | 55.4°F | cold |
Water temperature in Alpena in November | ||||
December | 39.2°F | 31.8°F | 45.7°F | cold |
Water temperature in Alpena in December |