Charleston Harbor holds late-summer warmth into the fall push

What's next

Expect the harbor to hold in the low-to-mid 80s through the next few days; a real cooldown typically doesn't arrive on the SC coast until water temps break below 80°F, and today's reading is still four degrees above that mark. Watch the tide swings around the 11:07 AM low and 5:44 PM high; moving water on either side of those turns is the best bet for triggering feeding activity while temperatures stay this warm.

With the Waxing Gibbous moon building toward full over the next week, expect stronger tidal exchanges and more current to work with on both the morning and evening swings. If the seasonal pattern Sport Fishing Mag describes holds true for the Southeast, the next real shift to watch for is inshore species starting to stage as baitfish begin moving with the changing water temperatures, worth checking back on as the water cools into October.

Context

Late September in Charleston Harbor typically sits at the tail end of summer patterns, with the real fall transition usually landing in October as water temperatures drop through the 70s. An 84°F reading on September 22 is on the warm side for this point in the calendar, consistent with a slow start to the cooldown this year. This is the seasonal window anglers watch closely, since the shift from summer to fall structure is one of the more productive stretches on the South Carolina coast once it arrives.