Rare Rust Tide Surfaces in Charlotte Harbor as Gulf Waters Stay Warm

What's next

Tides continue to set the rhythm for the next few days. Station 8725520 shows its next high tide around 6:10 PM local this evening, with station 8727520 peaking a couple hours earlier near 4:03 PM. Under the current Waning Gibbous moon, expect moderate tidal swings rather than the exaggerated push of a full or new moon, which should keep water movement fairly predictable for planning around passes and structure.

The Charlotte Harbor rust tide is the main thing to track over the next week or two. Florida Sea Grant's continued monitoring should clarify whether the bloom expands or fades, and that will shape which stretches of the harbor are worth working in the near term. With water still sitting in the low-to-mid 80s, expect the late-summer pattern to hold through the weekend before any real cool-down signals typically arrive in early October. Plan around the afternoon high tides noted above for the most active water movement during daylight hours.

Context

Late September on Florida's Gulf Coast usually sits in the transition window between summer and fall, though water in the low-to-mid 80s this late in the month runs on the warmer side of typical, more characteristic of August than early October. That tracks with the extended heat the broader Gulf has held this year. As temperatures gradually ease into October, inshore patterns typically shift toward the cooler-morning, more stable baitfish movement anglers associate with fall. For now, the region remains in a late-summer holding pattern, with the Charlotte Harbor rust tide detection standing out as the week's most unusual development rather than a sign of any broader seasonal shift.