Boat Winterization in South Carolina
In South Carolina, local boat deadlines run from Jan 1 to Dec 21, with a median around Nov 22 — a spread of weeks that a single statewide date would miss. Find your city below; each links to local freeze odds, a live 10-day outlook, and a checklist.
Notable cities
- Charleston — earliest deadline in the state
- Hilton Head Island — latest deadline in the state
- Summerville — near the state median
All South Carolina cities
| City | Local deadline | Median first 28°F | ||
|---|---|---|---|---|
| Charleston | Jan 1 | Jan 8 | View → | Checklist |
| Spartanburg | Nov 4 | Nov 11 | View → | Checklist |
| Rock Hill | Nov 11 | Nov 18 | View → | Checklist |
| Sumter | Nov 14 | Nov 21 | View → | Checklist |
| Greenville | Nov 15 | Nov 22 | View → | Checklist |
| Florence | Nov 20 | Nov 27 | View → | Checklist |
| Summerville | Nov 22 | Nov 29 | View → | Checklist |
| Columbia | Nov 25 | Dec 2 | View → | Checklist |
| North Charleston | Dec 8 | Dec 15 | View → | Checklist |
| Goose Creek | Dec 8 | Dec 15 | View → | Checklist |
| Mount Pleasant | Dec 9 | Dec 16 | View → | Checklist |
| Hilton Head Island | Dec 21 | Dec 28 | View → | Checklist |
Back to the national Boat Winterization guide, or see the methodology.
Data: NOAA NCEI 1991–2020 U.S. Climate Normals; live outlook by Open-Meteo. Last updated: July 11, 2026.