Last updated October 2026
Ngākuta Bay is an enclosed bay on Grove Arm, in Queen Charlotte Sound / Tōtaranui, about 11 kilometres from Picton along Queen Charlotte Drive and roughly 40 kilometres by road from Blenheim.
Most of the shore is lined with private homes and baches, but the whole foreshore is open to the public and there is a small swimming beach, a boat launching area and public toilets.
The water is sheltered sea water, well away from open-coast surf. Marlborough District Council tests the beach every week over summer and publishes the results through LAWA, where the site holds a Fair long-term grade: usually fine for swimming, but best avoided after rain.
Swimming Facts
Before you swim: Tested weekly Nov–Mar by Marlborough District Council. Stay out for 48 hours after heavy rain. Latest result on LAWA
Today at Ngākuta Bay
Wednesday 4 NovemberWater quality track record
What the grades mean
Excellent and Good: rarely unsafe for swimming. Fair: usually fine, but avoid swimming after rain. Poor: often unsuitable, especially after rain, so check the latest result first.
Grades use LAWA’s method: the 95th percentile of routine enterococci results over the five summers from 2020/21 to 2024/25, with at least 50 tests (379 per 100 mL from 100 tests).
Practical Information
- Location
- Queen Charlotte Drive, Grove Arm, Queen Charlotte Sound / Tōtaranui
- Distance from Blenheim
- About 40 km by road via Picton; about 11 km from Picton
- Water
- Sheltered sea bay in the Marlborough Sounds, tidal
- Water quality
- Fair (LAWA long-term grade, summers 2020/21 to 2024/25)
- Testing
- Weekly from November to March by Marlborough District Council
- Tide station
- Picton (LINZ)
- Facilities nearby
- Public toilets, boat launching area and roadside parking
About Ngākuta Bay
Ngākuta Bay is one of a string of bays along Queen Charlotte Drive, the 40 kilometre road that winds between Picton and Havelock through native forest and around the inner Marlborough Sounds. It sits on Grove Arm, the long south-western reach of Queen Charlotte Sound, a short distance west of Governors Bay and east of Momorangi Bay.
The bay has been known by this name since at least the 1860s, when it appeared in Picton electoral records, and the New Zealand Geographic Board made Ngākuta Bay the official name in May 2021. It is also a small rural settlement of a few dozen homes, many of them holiday baches, set back from a road that hugs the water.
Marlborough District Council describes Ngākuta as a large enclosed bay with predominantly private homes and baches, public access to the whole shoreline, boat launching facilities and a small swimming beach. The enclosed shape keeps the water calm in most conditions, which suits a paddle or a swim off the beach and launching small boats and kayaks into Grove Arm.
For many people the bay is a stop on the drive or ride between Picton and Havelock. The national cycle trail guide to Queen Charlotte Drive notes that Ngākuta Bay, and then Momorangi Bay, offer a chance to rest and perhaps have a swim, and lists Ngākuta Bay as one of the few places along the road with public toilets.
Swimming and Water Quality at Ngākuta Bay
Marlborough District Council samples the water at Ngākuta Bay every week from November to March. Samples are taken whatever the weather or tide, so the results reflect the full range of summer conditions, and they are published on LAWA’s “Can I Swim Here?” page for the bay.
The bay has a Fair LAWA long-term grade, based on the council’s routine summer testing over the summers of 2020/21 to 2024/25. Most samples over that time have met the guideline for swimming, but some have not.
A Fair grade means the water is usually fine for swimming but is more likely to be unsuitable after rainfall, so check the latest result on LAWA before you go in.
The council’s own reports show why rain matters here. Its 2010/11 recreational water quality report said water quality in Ngākuta Bay is generally very good, but that heavy rain over the Christmas period that summer, when the most people are staying in the bay, flooded the streams running into it and would have overloaded septic tanks.
The council advises against swimming after rainfall: stay out of the water for at least 48 hours after heavy rain, and avoid swimming when the water looks cloudy.
The bay is also used for launching boats, so swim away from the ramp area and watch for boats and jet skis coming in and out. There are no surf lifeguard patrols, so supervise children closely.
Getting There and Facilities
From Blenheim, take State Highway 1 north to Picton, then follow Queen Charlotte Drive west out of town towards Havelock. The road passes Governors Bay before reaching Ngākuta Bay, about 11 kilometres from Picton. Coming from Nelson, the drive continues from Havelock past Linkwater and Momorangi Bay.
Queen Charlotte Drive is narrow and winding, with plenty of corners, so allow time and pull fully off the road to park. Public toilets are by the bay. For a longer stop, the Department of Conservation campground at Momorangi Bay, a short drive further west, has a café and shop.
Where to Learn More
LAWA and Marlborough District Council: the latest “Can I Swim Here?” result and long-term grade for Ngākuta Bay.
LAWA and Marlborough District Council: how the council monitors Marlborough swimming spots each summer, with its description of Ngākuta Bay.
Ngā Haerenga New Zealand Cycle Trail: route guide to Queen Charlotte Drive between Picton and Havelock, with toilets and stops along the way.
Frequently Asked Questions
Can you swim at Ngākuta Bay?
Yes. Marlborough District Council describes a small swimming beach in the bay, and the water is tested weekly over summer. Check the latest result on LAWA before you swim, and stay out for at least 48 hours after heavy rain.
What is the water quality like at Ngākuta Bay?
Ngākuta Bay has a Fair LAWA long-term grade, based on summers 2020/21 to 2024/25. That means the water is usually fine for swimming but is more likely to be unsuitable after rain.
When is the water at Ngākuta Bay tested?
Marlborough District Council samples the bay every week from November to March, and the results are published on LAWA.
How far is Ngākuta Bay from Blenheim?
About 40 kilometres by road. Drive north to Picton on State Highway 1, then about 11 kilometres west along Queen Charlotte Drive.
Are there toilets at Ngākuta Bay?
Yes. Ngākuta Bay is one of the few places on Queen Charlotte Drive with public toilets, along with Governors Bay and the Department of Conservation campgrounds.
Is Ngākuta Bay patrolled by lifeguards?
No. There are no surf lifeguard patrols in the bay, so supervise children and keep clear of the boat launching area.
Is Ngākuta Bay the same as Governors Bay?
No. Governors Bay is the next bay east towards Picton. Ngākuta Bay is a separate enclosed bay on Grove Arm, with its own swimming beach and testing site.
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