- 10Cities compared
- OctoberStrongest month statewide
- 264 daysLongest calendar: Charleston
- 2Year-round cities
South Carolina is not one climate: Charleston banks 264 workable concrete pouring days a year while Columbia gets 154 — a spread the table below itemizes month by month. Season boundaries mark the first and last month averaging 8+ workable days against the label rules (40–90°F, nights 40°F+).
Statewide, October is the strongest month — it tops or ties the table in most listed cities. The live strips on each city page decide the week; this table decides the month. Scoring rules: methodology; the national playbook: the concrete pouring guide.
Chasing the season across state lines? Step back to Concrete Pouring in Rhode Island or push on to Concrete Pouring in South Dakota.
Cities in South Carolina
| City | Peak months | Season | Workable days/yr |
|---|---|---|---|
| Charleston | Oct, Nov, May | year-round | 264 |
| Columbia | Oct, May, Apr | March–June | 154 |
| Greenville | Oct, Sep, May | April–November | 164 |
| Myrtle Beach | Oct, May, Mar | February–December | 202 |
| Rock Hill | Oct, Sep, May | March–June | 158 |
| Spartanburg | Oct, Sep, May | March–June | 161 |
| Mauldin | Oct, Sep, May | April–November | 164 |
| North Charleston | Oct, Nov, Mar | February–June | 197 |
| Mount Pleasant | Oct, Nov, May | year-round | 264 |
| Florence | Oct, Nov, Mar | March–June | 159 |
Top 10 South Carolina calendars for concrete pouring
The rules behind these numbers
| Check | Threshold | Why it matters |
|---|---|---|
| Air temperature | 40–90°F — ideal 50–85°F | DIY pours work from 40–90°F; 50–85°F is the sweet spot. |
| Overnight low | ≥40°F during the first 48 h | A low under 40°F inside the first 48 hours puts you in cold-weather concreting — not a DIY window. |
| Dry before | no soaking (≥1.0") in the prior 24 h | Rain before the pour only matters if the ground is soaked or standing in water. |
| Dry after | <0.1" rain for 6 h after (12 h light rain after finishing still risks surface marks) | A downpour in the first 6 hours can wash the surface; after final set, rain actually helps curing. |
| Wind | ≤20 mph (rapid surface drying up to 28 mph) | Hot wind pulls bleed water out faster than the slab can handle. |
Always follow your product label — formulas vary. The table above is the typical range across major manufacturers, not a promise about your can.
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