‹ South Carolina weather by month
South Carolina weather in May
The state broadly agrees with itself in May: afternoons run 84° in Hilton Head Island and 79° in Myrtle Beach, with everywhere else in between.
Based on 3 weather stations. Three stations, all on the water — inland South Carolina and the upstate around Greenville run hotter in summer and colder on winter nights than any row here.
Charleston & the Lowcountry
Highs 79–84°, nights 64–68°, and 2.5–2.6 in of rain in a typical May.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Charleston | 79° / 68° | 4 | Warm, salt-heavy air and the first real beach weekends. |
| Hilton Head Island | 84° / 64° | 5 | The water turns swimmable and the season properly begins. |
The Grand Strand
Highs near 79°, nights around 62°, and 3.0 in of rain in a typical May.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Myrtle Beach | 79° / 62° | 5 | Everything's open, nothing's crowded yet — the locals' month. |
Each place above has its own page for the full story — what the month feels like, what to pack, and whether the timing is right.