The Wairau River is one of Marlborough’s most established trout fisheries — a 170 km braided river that produces large sea-run and resident brown trout (the regional dominant species), the occasional rainbow, and a small salmon run. It falls within Fish & Game’s Nelson/Marlborough region, so a current Nelson/Marlborough licence is required for all freshwater angling. The river offers a mix of fly-water, spin-fishing and bait-fishing options across its length, with the lower river particularly known for sea-run fish and the mouth productive for surfcasting kahawai.
Practical Information
| River | Wairau — Marlborough’s largest river, ~170 km long, braided |
| Fish & Game region | Nelson/Marlborough |
| Licence required | Yes — current Nelson/Marlborough Fish & Game freshwater licence |
| Primary species | Brown trout (both resident and sea-run) — dominant |
| Secondary species | Rainbow trout (less common), salmon (small run, low numbers) |
| Estuary species | Kahawai at the river mouth |
| Season | Check current Fish & Game regulations brochure — some sections seasonal, some year-round |
| Method | Fly, spin and bait — depending on section and water conditions |
| Wairau Access Guide | Fish & Game publishes a Wairau River Fishing Access Guide |
About Wairau River Fishing
The Wairau is one of the best trout fisheries in the Nelson/Marlborough Fish & Game region. The river runs 170 km from its source in the Spencer Mountains down through the Wairau Valley and across the Wairau Plain to Cloudy Bay, supporting brown trout throughout almost its entire length. The river’s braided character creates a constantly changing channel pattern that suits trout — gravel beds, side channels and pools — and the lower river receives sea-run browns moving up from the coast.
Brown trout are by some margin the dominant species — the resident population is well-established, and the lower river adds the sea-run component. Some big sea-run browns are taken from the lower river each season. Rainbow trout are less common in the Wairau system than browns. A small salmon run exists, but salmon numbers are low and the river is not primarily a salmon fishery.
Regulations and Licences
The Wairau is in Fish & Game’s Nelson/Marlborough region. A current Nelson/Marlborough freshwater licence is required for all anglers (with limited family-fishery exceptions in certain spring creeks like the Taylor — covered separately). Current season dates, bag limits and method restrictions are published in the regional Sports Fishing Regulations brochure — always check the current edition before fishing, as rules are revised year to year.
Fish & Game also publishes a Wairau River Fishing Access Guide that covers the formal public access points along the river — important on a braided river where farmland boundaries are not always obvious.
Where to Learn More
Fish & Game — Wairau Catchment — official Fish & Game Nelson/Marlborough page covering the Wairau catchment, species, conditions and regulations.
Fish & Game — Wairau River Fishing Access Guide (PDF) — the official access guide showing public access points along the Wairau, essential for first-time visitors to the river.
FishingMag — Wairau River and Diversion — independent fishing magazine guide with practical notes on sea-run trout, kahawai, salmon and red cod fishing on the lower Wairau and Diversion.
Frequently Asked Questions
Do you need a licence to fish the Wairau River?
Yes — a current Nelson/Marlborough Fish & Game freshwater licence is required.
What fish are in the Wairau?
Brown trout (dominant — resident and sea-run), rainbow trout (less common), a small salmon run, and kahawai at the mouth.
Is the Wairau a salmon river?
A small salmon run exists, but salmon numbers are low. The river is primarily a brown trout fishery.
Where can I find a Wairau access guide?
Fish & Game publishes an official Wairau River Fishing Access Guide PDF (link above) showing all the public access points.
When is the Wairau open for fishing?
Check the current Sports Fishing Regulations brochure for the Nelson/Marlborough region. Some sections are seasonal, some year-round — rules are revised annually.
For specific river sections see Wairau at Spring Creek, Wairau at the Rowing Club, and the topic-level Wairau River overview.
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