Last updated October 2026
Kai Iwi is a rural community about 14 kilometres west of Whanganui, reached via Rapanui Road off State Highway 3. The locality centres on Kai Iwi Beach, also known as Mowhanau, a black-sand beach on the Tasman Sea backed by eroding clay cliffs.
Visitors come for walks, fishing, summer swimming and the nearby Bushy Park Tarapuruhi bird sanctuary roughly 8 kilometres inland. A holiday park at the beach supports both day trips and overnight stays.
Kai Iwi also takes in the local area known as Mowhanau.
Official Locality Facts
- Population (2023 Census)
- About 350, up 19% since 2018
- Land area
- 83.94 km²
- Location
- 14.9 km north-west of central Whanganui
- Council
- Whanganui District Council
- Getting there
- Rapanui Road off State Highway 3, about 14 km west of Whanganui
- Schools
- Kai Iwi School
- Nearby landmarks
- Kai Iwi Beach (Mowhanau), Bushy Park Tarapuruhi bird sanctuary
Who Lives in Kai Iwi
About 350 residents in 130 households. From the 2023 Census, with the New Zealand figure alongside for comparison.
In Kai Iwi
Places and businesses inside the official Kai Iwi boundary.
Places
About Kai Iwi
Kai Iwi lies close to State Highway 3, roughly halfway between Whanganui and Waitotara. The population centre is at Kai Iwi Beach (Mowhanau), where residential and holiday homes line the coast. The community attracts visitors from Whanganui and beyond, especially in summer.
Kai Iwi Beach features striking black sand backed by clay cliffs. Facilities include a children’s playground with a flying fox, a toilet block with changing rooms, cold-water showers and wood-burning BBQs. The beach is patrolled by lifeguards during summer months.
Coastal erosion affects the area. The Mowhanau Lookout carpark on Sunset Parade has been permanently closed due to ongoing cliff instability. Visitors must stay well clear of the cliffs at all times.
Swimming can be affected by bacterial levels from nearby streams. Check current water quality on the LAWA website or Whanganui District Council beaches page before entering the water.
Bushy Park Tarapuruhi
Bushy Park Tarapuruhi is a predator-free native forest reserve and bird sanctuary located approximately 8 kilometres inland from Kai Iwi on Rangitatau East Road.
The reserve covers around 99 hectares of native bush and is managed by the Bushy Park Trust in partnership with Forest & Bird and local iwi Ngā Rauru Kītahi. It provides habitat for native birds including kiwi and is open to visitors for walks and wildlife viewing.
Beach Activities and Access
The beach supports swimming, fishing and long walks along the black sand. The holiday park provides camping and unit accommodation right at the beach. Access is straightforward by car from Whanganui, with parking available near the facilities. Freedom camping is restricted following the lookout closure.
Near Kai Iwi
Just outside Kai Iwi, within 10 km of its centre, nearest first.
Places
Where to Learn More
Whanganui District Council Beaches page: Current water quality information and beach access details for Kai Iwi and other district beaches.
Kai Iwi – Wikipedia: Overview of the rural community, geography and population data.
Bushy Park Tarapuruhi official site: Visitor information, opening details and sanctuary management.
Frequently Asked Questions
How far is Kai Iwi from Whanganui?
Kai Iwi Beach is approximately 14 kilometres west of Whanganui, a 15–20 minute drive via Rapanui Road off State Highway 3.
Is it safe to swim at Kai Iwi Beach?
The beach is patrolled by lifeguards in summer, but water quality varies. Always check the latest results on the LAWA website or Whanganui District Council beaches page before swimming.
Why is the Mowhanau Lookout closed?
The carpark and lookout on Sunset Parade have been permanently closed due to coastal erosion. Visitors must keep well clear of the cliffs.
What is Bushy Park Tarapuruhi?
It is a predator-free native forest sanctuary of around 99 hectares located about 8 kilometres inland from Kai Iwi. It is managed by the Bushy Park Trust with Forest & Bird and local iwi, and is open to visitors.
Is there accommodation at Kai Iwi Beach?
Yes, Kai Iwi Beach Holiday Park offers camping sites and holiday units right at the beach.
What activities are available at Kai Iwi Beach?
Visitors enjoy swimming, fishing, beach walks and the playground. The black sand and cliffs provide a scenic setting for day trips or longer stays.
Are dogs allowed at Kai Iwi Beach Holiday Park?
The park welcomes well-behaved dogs on leads.
How do I reach Bushy Park Tarapuruhi from Kai Iwi?
Turn off State Highway 3 onto Rangitatau East Road and follow the signs for approximately 8 kilometres.
Spotted something incorrect on this page? Let us know.
Explore Whanganui only lists suburbs officially recognised by Land Information New Zealand (LINZ), and Kai Iwi is one of them. Suburb boundary: LINZ, CC BY 4.0.