October Fishing the Siuslaw River, Oregon: Fall Salmon Are on the Move

October when the Siuslaw River around Florence starts feeling like a real salmon river again! The mornings are cold, fog hangs over the water, leaves are beginning to pile up along the banks, and every decent Oregon Coast rain has anglers wondering if the fish are moving.

And right now, there are fish in the river. The Siuslaw flows right through Florence and into the Pacific, and October is prime time to be thinking about fall Chinook, coho, and sea-run cutthroat trout. ODFW's latest report says fall Chinook are already in the system and anglers have been having good success in the lower river.

Fall Chinook Are the Big Attraction

If I'm fishing the Siuslaw in October, fall Chinook are the fish I'm thinking about first.

These are the big coastal kings that spend their lives in the Pacific before returning to the Siuslaw system to spawn. Some of these fish are downright heavy, powerful salmon, and hooking one in the tidal river is an entirely different experience from catching a trout or smaller salmon.

Early in October, I like the lower river and tidewater around Florence. Fresh Chinook coming in from the ocean can move with the tides, and you'll often hear about fish being caught throughout the lower system. As fall rains arrive, the game begins to change. Rising water encourages salmon to leave tidewater and start pushing farther upriver.

That's one reason October fishing can change practically overnight.

A stretch that seems dead one afternoon can suddenly have salmon rolling the following morning after fresh rain and a bump in river level.

ODFW currently lists the Siuslaw's 2026 wild Chinook season from August 1 through December 31, with a limit of one adult wild Chinook per day and five for the season in aggregate for the affected Siuslaw waters. Always check the latest regulations immediately before fishing because emergency and in-season changes can happen.

Coho Are Coming Through Too

October isn't just Chinook season.

Coho salmon are moving through the Siuslaw as well, and these fish bring a completely different personality to the river. Coho can be aggressive, unpredictable and frustrating all at the same time. You might see fish rolling everywhere and struggle to get one to bite, then suddenly have one absolutely hammer a spinner.

For 2026, the Siuslaw has a limited wild coho retention season running September 19 through October 13. During that period, the adult wild coho limit is one per day and three for the Siuslaw basin season, subject to the broader salmon limits and regulations.

That makes the first half of October especially interesting because you've potentially got Chinook and coho moving through the same general system at the same time.

Bright spinners, twitching jigs, plugs and other reaction-style presentations can all be worth trying for coho. When they're aggressive, there's nothing subtle about the strike.

Don't Forget the Sea-Run Cutthroat

One of the coolest fish in the Siuslaw gets overshadowed by salmon every fall.

Sea-run cutthroat trout are also available in the river during this period. ODFW continues to report both resident and sea-run cutthroat in the Siuslaw.

They're smaller than the Chinook and coho everyone is chasing, but they're beautiful fish and can be ridiculously fun on lighter tackle.

October can produce an interesting mix because you're fishing a coastal river that's transitioning from summer into its wet-season personality. Salmon are pushing upstream while trout continue feeding around edges, current seams and structure.

How I'd Fish the Siuslaw in October

If I were heading to Florence tomorrow morning, I'd pay almost as much attention to the weather and river conditions as I would my tackle box.

During a long dry spell, I'd concentrate more heavily on tidewater and the lower river where fresh salmon are entering from the ocean. I'd watch the tides and look for traveling lanes, deeper slots and places where salmon naturally slow down.

Then I'd watch the rain.

The first substantial fall rains are when things can get exciting. Once the Siuslaw begins rising, salmon that have been hanging around lower in the system can start moving upstream.

But there's a sweet spot.

Too little water and fish can become reluctant to move. Too much rain can turn the river high, fast and dirty. Somewhere between those extremes is that beautiful fall window when the river has come up, visibility is still fishable and fresh salmon are traveling.

That's the day I want to be standing on the bank.

What I'd Bring

For Chinook, I'd bring a heavier salmon setup capable of handling a large coastal king. Depending on where I'm fishing, I'd be prepared to run eggs under a float, throw spinners, work plugs or use other legal salmon presentations appropriate for that stretch of river.

For coho, I'd definitely have a few aggressive presentations ready. Spinners and twitching jigs would be high on my list.

And I'd bring more than one color.

October river conditions can go from relatively clear to green to downright muddy after a storm. Something that looks perfect in clear water might disappear when visibility drops.

More importantly, I'd make sure I knew exactly which section of the river I was standing on. The Siuslaw has section-specific closures and regulations. For example, ODFW's 2026 regulations include October-November closures in some upriver sections, while the mainstem and bay up to Lake Creek remain open for Chinook during the fall season.

October Is When the Siuslaw Comes Alive

You're standing there in the gray morning watching fog lift off the water. Your hands are cold. Everything smells like wet leaves and fir trees. Then somewhere downstream you hear that heavy splash that definitely wasn't a trout.

Salmon.

Maybe it's a coho shooting upriver.

Maybe it's a 25-pound Chinook that just came in from the Pacific.

That's what keeps me watching the weather forecast every fall.

October around Florence isn't about sitting around waiting for winter steelhead season. The fall salmon fishery is happening right now. Chinook are already being caught in the lower Siuslaw, coho are moving through the system, and sea-run cutthroat add another option when the salmon aren't cooperating.

Once those October storms begin rolling across the Oregon Coast, things can change fast.

The river rises.

The water turns that perfect coastal green.

And somewhere below Florence, another wave of salmon starts pushing on home.

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