Wind Conditions
Charleston's two spots share the same southerly wind direction and the same core season, but they don't line up exactly -- Folly Beach leans more on a thermal top-up and holds its season a month longer on each end than Sullivan's Island does.
South Carolina wind patterns
Southerly wind (from roughly E/ENE through WSW) is the dominant pattern at both Charleston-area spots, forming as the barrier-island coast heats up and pulls air in off the Atlantic. April through July is where Sullivan's Island and Folly Beach agree -- good wind at both. Sullivan's Island gets there mostly on the prevailing pattern alone, with only June and July needing a secondary thermal boost to stay reliable. Folly Beach depends on that thermal top-up more -- every month of its season except April needs it -- but that same thermal effect is also what stretches its window a month earlier, into March, and a month later, through August, past where Sullivan's Island has already gone quiet.
Wind range
Real qualifying-hour gust data at both spots runs roughly 13–25 knots through their respective seasons.
Best months for kitesurfing
April through July, when both Sullivan's Island and Folly Beach read good -- the one stretch every Charleston-area spot in this guide agrees on. Folly Beach extends its own season further on both ends, March and August, on the strength of its thermal top-up; Sullivan's Island doesn't hold up in either of those two months.
Monthly wind calendar
| Month | Typical wind | Wind range | Reliability | Kitesurfing |
|---|---|---|---|---|
| January | Quiet at both spots | Light, inconsistent | Poor | ★ |
| February | Quiet at both spots | Light, inconsistent | Poor | ★ |
| March | Folly Beach only, thermal-assisted | 14-25 knots * | Fair | ★★ |
| April | Both spots good | 13-25 knots | Excellent | ★★★★★ |
| May | Both spots good | 14-24 knots * | Excellent | ★★★★★ |
| June | Both spots good, thermal-assisted | 13-23 knots * | Excellent | ★★★★★ |
| July | Both spots good, thermal-assisted | 14-23 knots * | Excellent | ★★★★★ |
| August | Folly Beach only, thermal-assisted | 13-22 knots * | Fair | ★★ |
| September | Quiet at both spots | Light, inconsistent | Poor | ★ |
| October | Quiet at both spots | Light, inconsistent | Poor | ★ |
| November | Quiet at both spots | Light, inconsistent | Poor | ★ |
| December | Quiet at both spots | Light, inconsistent | Poor | ★ |
* Thermal-classified month
- Best time to kitesurf: April-July, a match at both spots; Folly Beach extends March-August on its own
- Typical wind: 13–25 knots through each spot's season
- Best wind direction: Southerly, roughly E/ENE through WSW at both spots
- Most reliable period: April-July
- Wind character: A prevailing southerly base at Sullivan's Island, mostly without needing a thermal boost; Folly Beach depends on that same thermal top-up most of its season, which is also what stretches its window a month longer on each end
More USA kitesurfing regions
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