Myrtle Beach Weather in September
Average highs run from 86°F on September 1 to 80°F on September 30, and lows from 68°F to 61°F. Normal precipitation for the month is 6.77 in.
September day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 83°F
- Average low
- 65°F
- Precipitation
- 6.77 in
- Record high
- 97°FSep 1, 1993
- Record low
- 44°FSep 7, 2003
- Chance of a freeze
- 0%
- Days of 90°F or more
- 1.9
- Daylight
- 12 h 51 min to 11 h 52 min
- Cloud cover
- 57%
- Humidity
- 79%
- Dew point
- 70°F
- Wind
- 11.6 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 86°F | 68°F | 97°F 1993 | 60°F 1999 | |
| Sep 2 | 85°F | 68°F | 92°F 2012 | 62°F 1998 | |
| Sep 3 | 85°F | 68°F | 92°F 2012 | 57°F 1996 | |
| Sep 4 | 85°F | 68°F | 94°F 2010 | 56°F 1994 | |
| Sep 5 | 85°F | 68°F | 92°F 2020 | 51°F 1997 | |
| Sep 6 | 85°F | 67°F | 90°F 1998 | 53°F 1997 | |
| Sep 7 | 85°F | 67°F | 93°F 2022 | 44°F 2003 | |
| Sep 8 | 85°F | 67°F | 92°F 2016 | 59°F 1997 | |
| Sep 9 | 84°F | 67°F | 94°F 1998 | 51°F 2003 | |
| Sep 10 | 84°F | 67°F | 93°F 2022 | 55°F 1998 | |
| Sep 11 | 84°F | 66°F | 90°F 1990 | 55°F 1998 | |
| Sep 12 | 84°F | 66°F | 97°F 2002 | 46°F 1999 | |
| Sep 13 | 84°F | 66°F | 89°F 1997 | 58°F 1992 | |
| Sep 14 | 84°F | 66°F | 91°F 2000 | 55°F 2015 | |
| Sep 15 | 83°F | 65°F | 89°F 1990 | 54°F 2015 | |
| Sep 16 | 83°F | 65°F | 92°F 2005 | 57°F 2001 | |
| Sep 17 | 83°F | 65°F | 93°F 1990 | 49°F 2003 | |
| Sep 18 | 83°F | 65°F | 93°F 1990 | 52°F 2003 | |
| Sep 19 | 83°F | 64°F | 91°F 2018 | 54°F 1990 | |
| Sep 20 | 82°F | 64°F | 90°F 2018 | 52°F 2003 | |
| Sep 21 | 82°F | 64°F | 91°F 2018 | 52°F 2003 | |
| Sep 22 | 82°F | 64°F | 91°F 2018 | 49°F 2003 | |
| Sep 23 | 82°F | 63°F | 93°F 2005 | 49°F 1999 | |
| Sep 24 | 81°F | 63°F | 91°F 2018 | 46°F 1999 | |
| Sep 25 | 81°F | 63°F | 92°F 2018 | 48°F 1990 | |
| Sep 26 | 81°F | 62°F | 88°F 2010 | 48°F 1990 | |
| Sep 27 | 81°F | 62°F | 88°F 1993 | 49°F 2001 | |
| Sep 28 | 80°F | 61°F | 91°F 2017 | 49°F 1990 | |
| Sep 29 | 80°F | 61°F | 93°F 1998 | 52°F 2001 | |
| Sep 30 | 80°F | 61°F | 89°F 1997 | 51°F 2001 |
Chance of rain
Sunrise and sunset
Times for 2026, local time (EDT).
- September 1
- sunrise 6:50 AM, sunset 7:41 PM
- September 30
- sunrise 7:09 AM, sunset 7:01 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00386153 (Myrtle Beach), public domain. Records: NOAA GHCN-Daily, station USC00386153, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.