Last updated July 2026
The Wairau River is Marlborough’s largest river and a key trout fishery in the Nelson/Marlborough Fish & Game region. This 170 km braided river supports resident and sea-run brown trout, a growing rainbow trout population, and a summer run of Quinnat salmon. The lower reaches and mouth also attract kahawai, with options for fly, spin and bait fishing depending on the section. A current Nelson/Marlborough freshwater fishing licence is required for all anglers.
Practical Information
| River | Wairau River, ~170 km long, braided with single-channel upper and lower sections |
| Fish & Game region | Nelson/Marlborough |
| Licence required | Yes, current Nelson/Marlborough freshwater licence |
| Primary species | Brown trout (resident and sea-run) |
| Other species | Rainbow trout (growing population, commonly caught in middle and lower reaches), Quinnat salmon (summer run, 6-20 lb), kahawai at the mouth |
| Season | Year-round fishing in the main stem up to Wash Bridge; check current regulations for other sections |
| Methods | Fly, spin and bait fishing permitted in appropriate sections |
| Access | Fish & Game Wairau River Fishing Access Guide (PDF) details public access points |
About Wairau River Fishing
The Wairau River flows 170 km from the Spenser Mountains through the Wairau Valley and across the Wairau Plain to Cloudy Bay. Its braided character creates diverse habitat with gravel beds, side channels and pools that support trout populations throughout most of its length. The upper reaches are stable and single-channelled before becoming braided up to 1 km wide in the main valley, then confined again in the lower reaches.
Brown trout dominate the fishery, with both resident fish and sea-run browns entering from the coast in the lower river. Rainbow trout numbers have increased, with fish from stocked tributaries such as the Branch and Leatham now commonly caught in the middle and lower Wairau. A summer run of Quinnat salmon ascends the river, typically weighing 6-20 lb, though the Wairau is primarily known as a trout fishery.
The river mouth and nearby Wairau Diversion provide opportunities for kahawai, especially from spring through summer. Anglers can target sea-run trout, salmon and kahawai at the mouths, with conditions varying by tide and season. Fish & Game publishes an access guide that identifies formal public access points along the river, which is essential on a braided system bordered by farmland.
Regulations and Licences
All freshwater angling on the Wairau requires a current Nelson/Marlborough Fish & Game licence. The main-stem Wairau is open year-round up to Wash Bridge, offering winter fishing opportunities. Bag limits, method restrictions and any seasonal closures for tributaries are detailed in the annual Sports Fishing Regulations brochure for the region. Anglers should always consult the current brochure before fishing, as rules are updated annually.
The official Wairau River Fishing Access Guide (PDF) maps public access points and is available from Fish & Game. This resource helps visitors navigate the river safely and legally, particularly where boundaries between public land and private farmland are not obvious.
What Visitors Often Say
Anglers praise the variety of water types and the chance to catch large sea-run brown trout in the lower reaches. Many note that the access guide is essential for finding good spots without trespassing.
Visitors highlight productive kahawai fishing at the river mouth during summer and appreciate the year-round options on the main stem. Some mention the growing rainbow trout numbers as a pleasant surprise compared with older reports.
Where to Learn More
Fish & Game Wairau Catchment page: official details on species, access, regulations and the catchment.
Fish & Game Wairau River Fishing Access Guide (PDF): maps of public access points along the river.
Fish & Game Nelson/Marlborough regulations: current Sports Fishing Regulations brochure and licence information.
Frequently Asked Questions
Do you need a licence to fish the Wairau River?
Yes, a current Nelson/Marlborough Fish & Game freshwater licence is required for all anglers.
What fish species are in the Wairau River?
Brown trout (dominant, including sea-run fish), rainbow trout (increasing numbers), Quinnat salmon (summer run) and kahawai at the river mouth.
Is the Wairau River open year-round?
The main stem is open year-round up to Wash Bridge. Check the current regulations brochure for other sections and tributaries.
Where can I find access information for the Wairau?
Fish & Game publishes an official Wairau River Fishing Access Guide PDF that shows public access points.
Are there salmon in the Wairau River?
Yes, a summer run of Quinnat salmon ascends the river, typically 6-20 lb, though numbers are modest compared with dedicated salmon rivers.
What methods can be used on the Wairau?
Fly, spin and bait fishing are all options, subject to any section-specific restrictions in the regulations.
Is kahawai fishing available at the Wairau mouth?
Yes, the river mouth and Wairau Diversion are known spots for kahawai, particularly from spring through summer.
Where does the Wairau River start and end?
It rises in the Spenser Mountains and flows to Cloudy Bay on the east coast of the South Island.
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