Flounder Fishing in Charleston, SC

Southern flounder are an ambush predator, and Charleston's inshore system — with its mix of sandy channel edges, inlet mouths, dock shadows, and hard-bottom ledges — is purpose-built for them. They lie flat on the bottom, camouflaged against the sand or shell, and explode on baitfish and shrimp passing overhead on the tide. Finding flounder means finding ambush points: the right combination of current, cover, and proximity to where bait concentrates.

Spring is the first prime window. April through June brings a consistent flounder bite as fish move from nearshore wintering areas back into the inshore system. Breach Inlet between Isle of Palms and Sullivan's Island is one of the most reliable spring flounder addresses in the Charleston area — the tidal exchange through that cut flushes bait and concentrates fish on both incoming and outgoing tides. The Stono River inlet, Folly River channels, and harbor entrance edges all produce spring doormats from late March through early June.

September and October bring the fall migration — flounder move from the back creek systems toward the inlets and nearshore as water cools. This is when the biggest fish of the year are caught in Charleston. Gigging at night (legal in South Carolina) peaks in September and October as flounder stage in sandy-bottom channels and along lit dock pilings. The combination of fall tidal movement, cooling water, and concentrated baitfish makes September flounder fishing in the Charleston system second only to fall redfish in terms of local excitement.

South Carolina regulations: 16 inches minimum total length. Daily bag limit is 5 fish per person. SC DNR has adjusted flounder regulations in recent years due to stock assessments — always verify current rules at scdnr.sc.gov before your trip.