This data the coastal Sagamore Beach ocean 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 Sagamore Beach today is 63.1°F. Based on our historical data over a period of ten years, the warmest water in this day in the Cape Cod Bay near Sagamore Beach was recorded in 2021 and was 68.4°F, and the coldest was recorded in 2017 at 60.6°F. Sea water temperature in Sagamore Beach is expected to drop to 62.8°F in the next 10 days. September average water temperature in Sagamore Beach is 66.2°F, the minimum temperature is 60.4°F, and the maximum is 73.6°F.
The swimming season in Sagamore Beach lasts from July to September. During those months, Sagamore Beach water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Sagamore Beach in winter reaches 40.3°F, in spring 45.1°F, in summer the average temperature rises to 66.7°F, and in autumn it is 59.2°F.
September 23, 2025 |
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today temp |
63.1°F |
September 22, 2025 |
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yesterday temp |
64.6°F |
The ocean salinity in Sagamore Beach is 31.06‰, and the average salinity of the World Ocean is 35‰.
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 Sagamore Beach. 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 Sagamore Beach. Data in table shown for September 23, 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' 7" | 0' 8" | 0' 8" | 0' 9" |
0.18 m | 0.2 m | 0.21 m | 0.24 m |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
1' 3" | 1' 5" | 1' 4" | 1' 3" |
0.39 m | 0.43 m | 0.41 m | 0.39 m |
Data in a table show Sagamore Beach temperature today (September 23, 2025). For more information and forecast for a few days, go to the weather forecast Sagamore Beach.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
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![]() | ![]() | ![]() | ![]() |
60.3°F | 61.3°F | 62.6°F | 66.6°F |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
![]() | ![]() | ![]() | ![]() |
70.9°F | 72.3°F | 68.5°F | 65.8°F |
You may also be interested in other sections of our site for Sagamore Beach: Sunrise and Sunset, Tides
These figures shows the average, minimum and maximum monthly sea temperature in Sagamore Beach. 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 Sagamore Beach 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 | |
---|---|---|---|---|
January | 39.4°F | 33.8°F | 46.4°F | cold |
Ocean water temperature in Sagamore Beach in January | ||||
February | 36.9°F | 31.1°F | 42.3°F | cold |
Ocean water temperature in Sagamore Beach in February | ||||
March | 38.7°F | 31.6°F | 46.6°F | cold |
Ocean water temperature in Sagamore Beach in March | ||||
April | 44.2°F | 36.3°F | 50.5°F | cold |
Ocean water temperature in Sagamore Beach in April | ||||
May | 52.7°F | 45.3°F | 63.1°F | cold |
Ocean water temperature in Sagamore Beach in May | ||||
June | 61.7°F | 53.1°F | 71.8°F | cold |
Ocean water temperature in Sagamore Beach in June | ||||
July | 68.9°F | 61.2°F | 77°F | warm |
Ocean water temperature in Sagamore Beach in July | ||||
August | 69.4°F | 64.4°F | 76.1°F | warm |
Ocean water temperature in Sagamore Beach in August | ||||
September | 66.2°F | 60.4°F | 73.6°F | cold |
Ocean water temperature in Sagamore Beach in September | ||||
October | 59.5°F | 52.7°F | 66.4°F | cold |
Ocean water temperature in Sagamore Beach in October | ||||
November | 51.6°F | 45.3°F | 58.8°F | cold |
Ocean water temperature in Sagamore Beach in November | ||||
December | 44.8°F | 39.6°F | 50.4°F | cold |
Ocean water temperature in Sagamore Beach in December |