Charleston Harbor still summer-warm as SC's fall red snapper window opens

What's next

Both CO-OPS stations show low tide arriving in the mid-afternoon today, close to 3:56 PM at Charleston Harbor and 3:31 PM up the coast, so the last stretch of outgoing water before the turn is the window worth planning around. The waning gibbous moon keeps tidal swings on the moderate side into early October, which should make for steadier, more predictable current through the week.

Sport Fishing Mag's fall migration coverage points to false albacore beginning to show on the surface as coastal water temperatures ease off summer highs, a pattern that typically works its way into South Carolina water through October. With Charleston Harbor still reading in the upper 70s, that shift hasn't fully arrived yet, but it's worth watching for over the coming weeks.

Context

Upper-70s water in Charleston Harbor in late September is normal for the tail end of South Carolina's saltwater summer. The real fall transition, cooler water and improving surface action, typically firms up through October. The newly opened fall red snapper window is itself a marker of that calendar shift, reflecting the shorter, more tightly managed exempted-permit seasons that have become more common on the South Atlantic bottom fishery in recent years. Nothing about this week's readings points to an early or late transition; conditions track a typical year for the region.