Mobile Bay holds its warmth as fall mullet run reaches the Gulf
Mobile Bay's inshore water is running noticeably warmer than the open Gulf this week: NOAA CO-OPS station 8736897 logged 75.7°F early this morning, 3.6 degrees above the 72.1°F reading at Gulf-facing station 8735180. That split matches the normal fall pattern of protected bay water holding onto summer heat longer than open water. Saltwater Sportsman's latest coverage of the fall mullet run notes the migration is already running along the Gulf of Mexico, with mullet pouring out of rivers, bays and estuaries by the millions this time of year, the kind of bait movement that pulls predators toward passes and surf as it passes through.
New to these readings? What water temp, tide, and moon phase mean for fishing →
What's next
Both monitored stations show low tide settling in around 9:00 to 9:15 AM CDT over the next couple of days, which makes the morning outgoing current into late morning the window worth building a trip around, with the turn to incoming water setting up a second opportunity into the afternoon. The new moon overhead means a wider-than-average tidal range and faster current through the passes, which tends to concentrate bait and the fish tracking it along current seams, drop-offs and pass mouths.
If the Gulf side keeps cooling faster than the bay, as this week's split suggests, look for activity to lean toward warmer bay-side structure over the next several days rather than the open Gulf. The mullet run Saltwater Sportsman is tracking typically keeps building through the rest of October and into November, so pressure on bait pods along the surf and around the passes should keep climbing heading into the weekend rather than ease off.
Context
Early-to-mid October has Mobile Bay and the surrounding Gulf in the heart of the fall transition, the stretch when the region shifts from summer's heat-driven patterns toward the cooler water that typically holds through late fall. The mullet run that pushes baitfish out of coastal rivers and estuaries each September through November is one of the Gulf Coast's most reliable seasonal markers, and seeing it active now is in line with a normally timed season rather than an early or late one.
A roughly three-to-four-degree split between protected bay water and the open Gulf is typical for this stage of fall, when enclosed water lags the open Gulf's cooling, a gap that usually narrows as the season progresses.
Synthesized from real-time NOAA buoy data, USGS stream gauges, and current reports across regional fishing blogs, captain updates, and angler forums. Check local regulations before keeping fish. Never trust a single source for a trip decision.
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