The Mullet Run: When It Starts and How to Fish It

When it happens

The run generally starts in late August, builds through September, and can hold into October or early November. There is no fixed start date — it is triggered by shortening days and falling water temperature, so a hot, still fall pushes it later and the first real cold snap can set it off all at once.

September and early October are the heart of it in most years. If you only get a handful of trips, spend them then.

Which coast gets it

The Atlantic side is the famous one. Schools funnel south along the beaches from the Space Coast through the Treasure Coast and the Gold Coast, hemmed against the sand, and the fishing from Sebastian Inlet down through Stuart, Jupiter and Palm Beach can be genuinely chaotic — snook, tarpon, jacks, kingfish, blacktips and big jacks all working the same bait at once.

The Gulf side gets its own version. Mullet stage and move along the beaches from Anna Maria down through Englewood, Boca Grande and Naples, and the snook and redfish take full advantage. It is less concentrated than the Atlantic run, because the bait is not being squeezed down a single beach line the same way, but a big school pushing through a pass on a falling tide is still one of the best things that happens all year.

The weather is the whole signal

Watch water temperature first. The run tracks cooling water, and the first meaningful drop is usually what gets it moving. A stretch of 80-degree water in September means it is still coming; water sliding into the mid 70s means it is on.

Then watch the fronts. The first cold fronts of the season are the trigger — the wind swings around, the humidity breaks, and bait that was scattered gets shoved down the beach in a hurry. The two or three days behind a front are often the best of the whole season.

Wind direction decides whether you can actually fish it. On the Atlantic side, a west or northwest wind lays the surf down and cleans the water, which makes sight-fishing the schools possible; a hard onshore east wind stacks bait tight to the sand but turns the surf to soup. On the Gulf side it is the reverse — an east wind off the land is the calm one.

How to fish it

• Look for the school before you cast — nervous water, dark patches, birds working, and predators blowing up on the edges.
• Fish the edges and the trailing end. Casting into the middle of a packed school usually gets you nothing; the predators are picking off strays.
• Match what is there. Early in the run the bait is smaller finger mullet; later schools run bigger.
• Inlets and passes on a falling tide concentrate everything, which is why they get crowded — go early.
• Expect sharks. Where there is that much bait and that many hooked fish, blacktips and spinners show up, and they will take a fish off your line.

Fish it responsibly

Snook and tarpon are the two headline species of the run and both are tightly managed — check current state regulations before you keep anything, since seasons and slot limits change. Big tarpon are catch-and-release, and a fish fought in warm September water needs a real revival before it swims off.

The schools themselves are the resource. Cast-netting bait is part of the tradition, but there are limits on how much you can take, and a beach full of people is not the place to fill a cooler with mullet you will not use.