In the beginning of the month, it is not always necessary (but often more likely) to have a few days with temperatures exceeding 90°F (32°C), and likewise, there are usually a few days in which the daily high falls into the 70s. The daily high temperatures in September are fairly consistent from day to day throughout the month, with the majority of the high days being in the 80s.
If you plan to engage in outdoor activities for an extended period of time, it is advisable to carry a light additional clothing layer. Keep in mind that evenings and nights may be cooler, especially after a hot day. Mornings are generally colder than the peak daytime temperature, making it an opportune time for outdoor activities.
Humidity
The climate in Myrtle Beach during September is typically moist, and can frequently be exceedingly damp.
Water Temperature
Ocean surface temperature in Myrtle Beach in September averages between 79-82°F (26-28°C), which is still an ideal temperature for swimming and watersports.
Hurricane Risk In Myrtle Beach In September
Starting in August, typically in the later months of the season, most of the storms that impact Myrtle Beach occur during the Atlantic hurricane season, which spans from June 1 to November 31.
It is advisable to take out insurance to cover your trip in case you need to cancel the event, especially if you are booking ahead of time. It is quite possible that the Myrtle Beach area may be affected by tropical storms and hurricanes during the month of September, which could impact your travel plans.
If the Myrtle Beach area is affected by a heavy weather condition or a hurricane, it is essential to be prepared, follow the advice of local authorities, and seek visitation in other safe areas.
Information about what to do in the event of a hurricane can be found on the website of the South Carolina Emergency Management Division, including contact information for local government agencies in Horry County and maps of flooding and storm surge areas.
September Sunshine, Clouds & Rain In Myrtle Beach
Rain typically occurs for an average of 8-9 days within the month, with an average rainfall of 6.3 inches. During September, Myrtle Beach experiences an average of 8 hours of sunshine per day.
It is common to enjoy extended periods of sunny weather during this time of year. The proportion of sunny days may vary from year to year, depending on whether there are any hurricanes or tropical storms passing through during the month. However, September usually offers a very good amount of sunshine at Myrtle Beach.
During the summer, the southeastern region experiences afternoon showers and thunderstorms, which are frequently linked to the conclusion of a cloudy or rainy period. In addition, around one-third of September days are characterized by mostly clear skies and sunshine, making up approximately half to two-thirds of the month.
During the month of September, there are typically a few consecutive days in which predominantly cloudy weather occurs. If a storm system is passing through the area, there is a possibility of experiencing several consecutive days of mostly overcast weather. It is not uncommon to encounter cloudy days during this time of year.