Is it too cold to swim in Myrtle Beach in September?
The ocean holds steady at 70 or 80 degrees in September, and hotel pools in Myrtle Beach remain open for at least another month, so you can go swimming and lounge in the sun for your entire vacation if you wish.
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September is often the warmest month of the year. It will be amazing. Make sure your resort has air conditioning as a few of the older ones do not. If you are ocean front you wont need it with the breeze.
Myrtle Beach, located in Horry County, is a part of South Carolina's Grand Strand. From June through early October water temperatures are practically tropical making this area perfect for swimming and beach activities.
As indicated, a double red flag means the water is closed to the public; no swimming is allowed. A single red flag indicates hazardous conditions, such as strong waves or currents. Medium hazards are indicated by a yellow flag, while a green flag shows that conditions are generally good.
A hurricane may continue to build and increase in intensity until it reaches cooler water or makes landfall. The months of August, September, and October have significantly more hurricane activity than other months. During these months, particularly in September, ocean waters have reached their highest temperatures.