Myrtle Beach weather in September

September in Myrtle Beach: hot, soaked, with very humid — an excellent time to visit.

#5 of 12 months in Myrtle Beach · #309 of 604 destinations to visit in September · comfort 80/100 (tier A)

Updated June 2026 · climate normals from ERA5 reanalysis

Myrtle Beach climate normals — September

Daytime high28°C / 82°F🥵 hot
Nighttime low22°C / 71°F
Feels like (high)31°C / 88°F
Rainfall155 mm / 6.1 in⛈ soaked
Rainy days12 days
Humidity76%💦 very humid
Dew point19°C / 67°F
Sunshine10 h/day
Daylight12.4 h
Wind16 km/h / 10 mph
Air quality (US AQI)51🙂 moderate

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Where is Myrtle Beach?

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Myrtle Beach in September — FAQ

Is September a good time to visit Myrtle Beach?
September in Myrtle Beach: hot, soaked, with very humid — an excellent time to visit. It ranks #5 of 12 months for Myrtle Beach on SeasonMap's comfort score (80/100).
What is the weather like in Myrtle Beach in September?
In September, Myrtle Beach averages a daily high of 27.5°C and a low of 21.7°C, with about 154.5 mm of rain over roughly 11.8 rainy days.
What is the air quality in Myrtle Beach in September?
Myrtle Beach has a mean US Air Quality Index of about 51 in September.

Other months in Myrtle Beach

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