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All Myrtle Beach population data above are from the US Census Bureau. With 29,992 people, Myrtle Beach is the 14th most populated city in the state of South Carolina out of 395 cities. But watch out, Myrtle Beach, because Anderson with 27,181 people and Greer with 27,676 people are right behind you.
Average Weather in September in North Myrtle Beach South Carolina, United States. In North Myrtle Beach, the month of September is characterized by falling daily high temperatures, with daily highs decreasing by 6Â°F, from 85Â°F to 79Â°F over the course of the month, and rarely exceeding 89Â°F or dropping below 72Â°F.