Last updated July 2026
Mowhanau is a small coastal settlement on the Tasman Sea coast approximately 14 kilometres west of Whanganui. It sits at Kai Iwi Beach and the Whanganui District Council refers to the area as Kai Iwi Beach (Mowhanau). The settlement features a mix of permanent residences and holiday homes centred on Sunset Parade and surrounding streets. The 2023 census recorded a population of 1,407 for the Mowhanau statistical area. Black-sand beaches and clay cliffs form the main attraction for residents and day visitors from Whanganui.
Practical Information
| Location | Sunset Parade and surrounding streets, Kai Iwi Beach, approximately 14 km west of Whanganui |
| Population | 1,407 (2023 census, Mowhanau statistical area) |
| Beach access | Direct access to Kai Iwi Beach (black sand, Tasman Sea) |
| Facilities | Toilets, playground on Tangi Street, Kai Iwi Beach Holiday Park |
| Lookout | Mowhanau Lookout carpark on Sunset Parade permanently closed due to coastal erosion |
| Access road | Rapanui Road off State Highway 3 |
About Mowhanau
Mowhanau forms the residential and holiday community directly at Kai Iwi Beach. The settlement lies within the larger Mowhanau statistical area, which recorded 1,407 residents in the 2023 census. Permanent homes and holiday houses line the streets around Sunset Parade, giving the area a relaxed neighbourhood character while remaining within a short drive of Whanganui.
The beach itself provides the primary draw, with its distinctive black sand backed by clay cliffs. Visitors enjoy walking along the shore, fishing, and swimming when conditions allow. A holiday park at 66 Mowhanau Drive offers camping and accommodation options right beside the beach. The playground on Tangi Street provides family-friendly facilities.
Coastal processes shape daily life and planning in Mowhanau. The Whanganui District Council maintains an active coastal action plan for the area and continues rock revetment work to manage erosion. Recent assessments have informed decisions about public access and long-term resilience measures.
Erosion and Coastal Planning
Coastal erosion remains the dominant issue at Kai Iwi Beach (Mowhanau). The cliffs are subject to ongoing natural retreat, with risks increasing due to climate change and storm events. In April 2026 the council permanently closed the Mowhanau Lookout carpark on Sunset Parade after expert assessment found the area unsafe. Visitors must stay well clear of cliff edges at all times. The council maintains the existing rock revetment and continues hazard assessments as part of its coastal action plan.
What Visitors Often Say
Visitors appreciate the relaxed atmosphere and unique black-sand beach, describing it as a pleasant short drive from Whanganui for a day at the coast with family.
Families often mention the playground and holiday park as convenient amenities that make the beach a practical and enjoyable outing for children.
Where to Learn More
Whanganui District Council Coastal Action Plan: Official page with erosion reports, management options and contact details for Kai Iwi Beach (Mowhanau).
Kai Iwi – Wikipedia: Background on the wider Kai Iwi community and Mowhanau statistical area demographics.
Whanganui District Council Mowhanau Playground: Location and details for the playground at Kai Iwi Beach.
Frequently Asked Questions
Where is Mowhanau?
Mowhanau is the coastal settlement at Kai Iwi Beach, approximately 14 kilometres west of Whanganui via Rapanui Road off State Highway 3.
What is the difference between Mowhanau and Kai Iwi?
Kai Iwi refers to the broader rural community, while Mowhanau specifically denotes the beach settlement. The council uses the combined name Kai Iwi Beach (Mowhanau) for the coastal area.
Why is the Mowhanau lookout closed?
The Mowhanau Lookout carpark on Sunset Parade was permanently closed in April 2026 due to ongoing coastal erosion that made the site unsafe for public use.
How many people live in Mowhanau?
The 2023 census recorded 1,407 people in the Mowhanau statistical area, which includes the beach settlement and surrounding rural parts.
Is Mowhanau safe for swimming?
The beach is suitable for swimming when water quality permits. Check current conditions on the Whanganui District Council beaches information before entering the water.
Is there accommodation at Mowhanau?
Yes, the Kai Iwi Beach Holiday Park at 66 Mowhanau Drive provides camping and holiday unit accommodation adjacent to the beach.
What facilities are available at Kai Iwi Beach?
Facilities include public toilets, a playground on Tangi Street, and the holiday park. Beach access is direct from the settlement streets.
What should visitors know about erosion at the beach?
Cliffs are actively eroding. Stay well back from cliff edges and avoid the closed lookout area. The council maintains rock revetment to help protect the shoreline.
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