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The weather in South Carolina in September is hot. The average temperatures are between 22°C and 28°C.
You can expect rain for roughly half of the month of September in South Carolina. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in South Carolina in September 2025.
If you’re planning to visit South Carolina in the near future, we highly recommend that you review the 14 day weather forecast for South Carolina before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 12° / 6° | 5 | 25 | 1 | 72 mm | Ok | South Carolina in January |
| February | 14° / 8° | 5 | 23 | 0 | 88 mm | Good | South Carolina in February |
| March | 17° / 11° | 6 | 25 | 0 | 103 mm | Good | South Carolina in March |
| April | 21° / 15° | 5 | 25 | 0 | 101 mm | Good | South Carolina in April |
| May | 25° / 19° | 8 | 23 | 0 | 162 mm | Good | South Carolina in May |
| June | 29° / 23° | 10 | 20 | 0 | 179 mm | Ok | South Carolina in June |
| July | 30° / 25° | 12 | 19 | 0 | 207 mm | Ok | South Carolina in July |
| August | 30° / 24° | 12 | 19 | 0 | 245 mm | Ok | South Carolina in August |
| September | 28° / 22° | 8 | 22 | 0 | 213 mm | Good | South Carolina in September |
| October | 24° / 17° | 4 | 27 | 0 | 108 mm | Perfect | South Carolina in October |
| November | 18° / 11° | 5 | 25 | 0 | 91 mm | Good | South Carolina in November |
| December | 15° / 9° | 5 | 26 | 0 | 109 mm | Good | South Carolina in December |
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