This data the coastal North Myrtle 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 North Myrtle Beach today is 77.5°F. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near North Myrtle Beach was recorded in 2019 and was 82.8°F, and the coldest 77.5°F. Sea water temperature in North Myrtle Beach is expected to rise to 79°F in the next 10 days. September average water temperature in North Myrtle Beach is 80.6°F, the minimum temperature is 74.7°F, and the maximum is 85.3°F.
The swimming season in North Myrtle Beach lasts from May to November. During those months, North Myrtle Beach water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in North Myrtle Beach in winter reaches 58.8°F, in spring 65.5°F, in summer the average temperature rises to 81.3°F, and in autumn it is 73.6°F.
September 15, 2025 |
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today temp |
77.5°F |
September 14, 2025 |
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yesterday temp |
77.7°F |
The ocean salinity in North Myrtle Beach is 33.61‰, 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 North Myrtle 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 North Myrtle Beach. Data in table shown for September 15, 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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2' 2" | 2' 2" | 2' 2" | 2' 2" |
0.65 m | 0.65 m | 0.67 m | 0.66 m |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
2' 2" | 2' 3" | 2' 5" | 2' 4" |
0.67 m | 0.68 m | 0.73 m | 0.72 m |
Data in a table show North Myrtle Beach temperature today (September 15, 2025). For more information and forecast for a few days, go to the weather forecast North Myrtle Beach.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
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72.1°F | 70.3°F | 69.3°F | 71.4°F |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
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78.3°F | 78.4°F | 78.3°F | 75.2°F |
You may also be interested in other sections of our site for North Myrtle Beach: Sunrise and Sunset, Tides
These figures shows the average, minimum and maximum monthly sea temperature in North Myrtle 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 North Myrtle 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