When Do Salmon Spawn in Alaska?

Alaska salmon run from May into November — but there is no statewide answer, and anyone giving you one is averaging away everything that matters. Five species, four very different regions, and many rivers carrying two separate runs of the same fish.

First: the run is not the spawn

Almost every article on this topic answers a different question from the one being asked.

Entering fresh water is the run. Spawning happens afterwards, and the gap depends entirely on how far upstream the spawning gravel is.

Alaska has the clearest illustration of this anywhere. ADF&G tracked fish that entered the Yukon River on 19 July, and projected them approaching:

Location	Expected arrival
Huslia / Tanana	10 August
Stevens Village	15 August
Fort Yukon	20 August
US–Canada border	31 August

Six weeks of upstream travel from one river mouth. The same fish is a July fish at the coast and a September fish upriver — and spawning is later still.

So on a big Alaskan river, "when do salmon spawn" depends on where you are standing as much as on the species.

By species, roughly

Species	Broad Alaska timing
Chinook (king)	May – July, earliest of the five
Sockeye (red)	Mid-June – August, peaking early-to-mid July
Pink (humpy)	Mid-July – August
Chum (dog)	Mid-June – September, with distinct summer and fall runs
Coho (silver)	Late July – October, latest of the five

That table is the most general thing on this page and it is already three months wide. Below is where it gets useful.

Southcentral: the Kenai Peninsula, river by river

This is the most-fished region in Alaska, and ADF&G publishes run timing water by water. Note how many rivers carry two separate runs.

Water	Species	Run timing
Kenai River	Chinook	Early run: mid-May – late June · Late run: early July – closure end of July
	Sockeye	Mid-July – mid-August
	Coho	Late July – mid-October
	Pink	Mid-July – August
Russian River	Sockeye	Early run: mid-June – mid-July · Late run: mid-July – closure mid-August
	Coho	Early August – end of September
Kasilof River	Chinook	Late May – closure late July
	Sockeye	June – August
	Coho	Late July – September
Anchor R. / Deep Ck. / Ninilchik R.	Chinook	Late May – mid-June
	Coho	Early August – mid-September
Deep Creek (saltwater)	Chinook	Early: early May – late June · Late: late June – early August
Homer Spit	Chinook	Mid-May – early July
	Coho	Early: mid-July – early August · Late: early August – mid-September

Those early/late pairs are the point. The Kenai's chinook are two genetically distinct runs, and so are the Russian River's sockeye. Miss the early run and you have not missed the year — but you have missed a different set of fish.

Bristol Bay: sockeye, and a very tight schedule

Bristol Bay holds the largest sockeye run on earth, and it is one of the most closely monitored fisheries anywhere.

Sockeye are usually running in good numbers in the Naknek, Kvichak, Nushagak and Wood rivers by early July.

What is striking is the precision. ADF&G tracks run timing against a 20-year average: the 2025 run came in one day early, and 2024 was two days late against forecast.

Days, not weeks. For planning a Bristol Bay trip, early July is a genuinely reliable target — which is not true of most fisheries on this page.

The Yukon: two seasons, and serious conservation constraints

ADF&G manages the Yukon in two distinct seasons:

• Summer season — Chinook and summer chum enter the river from late May through mid-July in the lowest district. At the Pilot Station sonar, the summer chum run's quarter point, midpoint and third quarter fell on 26 June, 2 July and 7 July.
• Fall season — Lower Yukon districts transitioned to fall management on 13 July.

This is not a fishery to plan casually. Yukon fall chum are a designated Stock of Management Concern, and the fall season now opens three days early specifically to protect the run. Yukon Chinook have been under severe restriction for years.

If you are looking at the Yukon, the run timing is the least important thing to research. Check current ADF&G announcements and emergency orders first — the regulatory picture changes within seasons, not just between them.

Southeast: five species, months apart

Southeast Alaska is the cruise-ship-and-charter region, and it shows the species spread most clearly. Around Ketchikan:

• Pink — enters streams in summer, schooled at stream mouths in August
• Chum — fresh water late August through early September
• Coho — summer-run from late June, but the main run enters mid-August to November
• Sockeye — caught in fresh water most often in July
• King — largely a saltwater fishery here, and freshwater king fishing is closed unless opened by emergency order

Ketchikan Creek itself "fills with spawning salmon each July and August."

There is a full breakdown in the Ketchikan article, including the king closure, which catches visitors out every year.

What this means for planning a trip

Pick the species first, then the region, then the date. In that order — the reverse is how people end up on a river three weeks after the fish they wanted.

• Chinook — May and June. Kenai early run, Deep Creek saltwater, Homer Spit.
• Sockeye — early-to-mid July. Bristol Bay for volume, Russian River for accessibility.
• Pink — mid-July through August, everywhere, and easiest of the five.
• Chum — August into September.
• Coho — late August into October. The Kenai runs coho into mid-October, the latest window on this page.

And check emergency orders. ADF&G states plainly that it may "close, restrict, open, or liberalize all or part of these fisheries at any given time." Alaska manages in-season and aggressively. A run that opened last year may not open this year.

They all die

All five Pacific salmon die after spawning — unlike steelhead, brown trout and brook trout, which survive and return.

Two practical consequences. Fish deteriorate fast once they commit to fresh water: flesh softens, colour changes, eating quality drops sharply. A bright fish in salt water and the same fish two weeks up a river are different products. And the run is finite — the fish spawning in front of you are the next cycle, and there is no second attempt.

Related

• When do salmon spawn in Ketchikan, Alaska? — the Southeast picture in full, species by species.

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Sources

• Kenai, Soldotna & Homer Run Timing — ADF&G Division of Sport Fish, Southcentral Region (PDF) — the river-by-river Kenai Peninsula table, including the early and late run pairs, and ADF&G's statement that it may close, restrict, open or liberalize any of these fisheries at any time.
• 2025 Yukon River Salmon Summer Fishery Announcement — ADF&G (PDF) — the summer season definition, Pilot Station sonar run quartiles, the 13 July transition to fall management, fall chum as a Stock of Management Concern, and the upstream transit dates from 19 July to the US–Canada border on 31 August.
• Area Sport Fishing Reports: Bristol Bay — ADF&G — sockeye running in good numbers in the Naknek, Kvichak, Nushagak and Wood rivers by early July, and run timing tracked against a 20-year average.
• Ketchikan Area Salmon — ADF&G (PDF) — the Southeast per-species timing and the freshwater king salmon closure.

Every figure above is ADF&G run and fishery timing — when fish enter fresh water and when they are catchable — because that is what the agency publishes. Spawning follows river entry by days to weeks depending on how far upstream the gravel is, as the Yukon transit table shows. No spawning water temperature is given because ADF&G reports calendar timing rather than thermal triggers for these species. Kodiak, Prince William Sound, Norton Sound, the Kuskokwim and the Alaska Peninsula are not covered here — each needs its own regional source. Always check current ADF&G emergency orders before travelling.