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 |
Local boat winterization deadlines for South Carolina cities — built from each city’s own NOAA station, not one statewide date.
Boat Winterization in South Carolina: related searches
South Carolina homeowners search for: how to winterize a boat, winterize outboard motor, and "boat winterization near me" — every city page below answers those with local NOAA dates.
Back to the national Boat Winterization guide, or see the methodology. You can also compare how the boat winterization window shifts in Rhode Island and South Dakota.
Data: NOAA NCEI 1991–2020 U.S. Climate Normals; live outlook by Open-Meteo. Last updated: July 25, 2026.