Milford Sound vs Doubtful Sound: A Deep Dive
- Alice Neilson - Fiordland Enthusiast & Writer
- 4 days ago
- 8 min read
Many visitors to Fiordland National Park find themselves deciding between visiting Milford Sound and Doubtful Sound.
While both offer spectacular scenery and wildlife experiences, they feel quite different once you’re there. Milford Sound is more accessible and journey-focused, while Doubtful Sound requires more effort to reach but is quieter and more remote.
This guide breaks down the key differences between the two destinations, including accessibility, wildlife, accommodation, atmosphere, and the overall experience, so you can decide which one best suits your trip.
Key Takeaways
Milford Sound is more accessible and has a wider range of tour operators and self-drive options. Doubtful Sound is more remote and can only be visited through one tour operator (RealNZ).
The journey to Milford Sound is part of the experience, with a varied scenic drive and multiple photo stops along the way.
The journey to Doubtful Sound involves a lake crossing and a coach trip, with scenery that's more about the destination than the drive.
You can stay overnight in Milford Sound itself (at Milford Sound Lodge or on the overnight cruise). Doubtful Sound doesn't have land-based accommodation, but you can stay overnight on the cruise.
Doubtful Sound has resident dolphins and a higher chance of seeing rare Fiordland crested penguins. The drive to Milford Sound offers more chances of seeing native birds like kea and weka.
If you can't decide between the two, you can do both, and tour packages allow you to book a convenient 2-day trip.
Location and Geography
Both Milford Sound and Doubtful Sound are located within Fiordland National Park, in the south-west corner of New Zealand's South Island.
Milford Sound sits in the northern part of the park, accessible via the Milford Road (State Highway 94) from Te Anau. Doubtful Sound sits to the south of Milford Sound, accessed via a boat trip over Lake Manapouri and a drive over Wilmot Pass.
Milford Sound is around 16km long, narrower, and lined with steep cliffs on either side. Doubtful Sound is around 40km long (about three times longer), wider, and has several distinct arms branching off the main fiord, making it around ten times larger in surface area overall.
Getting to Milford Sound and Doubtful Sound
Milford Sound
Milford Sound is reachable by car via the Milford Road from Te Anau.
The drive from Te Anau takes around 1 hour 45 minutes without stops, or 3 hours 45 minutes with photo stops along the way. From Queenstown, it's around 4 hours one way non-stop, or 6 hours with stops.
You can also visit Milford Sound on a guided day tour, with several small group and large coach operators running daily tours. If you plan to base yourself in Te Anau, you can take a day tour from Te Anau to Milford Sound, for around a 9-hour total day trip. If Queenstown suits your itinerary better, you can take a day tour from Queenstown for around a 13-hour total day trip.
Doubtful Sound
There is no public road access into Doubtful Sound.
The only way to reach Doubtful Sound is via a guided tour run by RealNZ. The journey involves a 45-minute cruise across Lake Manapouri, followed by a 45-minute coach trip over Wilmot Pass through native rainforest before dropping down to Deep Cove at the edge of Doubtful Sound.
Wilmot Pass road was built in the 1960s to support the construction of the Manapouri Power Station and is not connected to the public road network. The road can only be accessed as part of the RealNZ tour, which is why Doubtful Sound has just one operator running a tour and cruise there.
The Doubtful Sound day tour includes the Lake Manapouri crossing, the Wilmot Pass coach trip, and a 3-hour cruise of Doubtful Sound itself. The total day is around 7.5 hours from Manapouri, with pickup options also available from Te Anau or Queenstown.
What the Journey Is Like
If part of the appeal for you is the journey itself, Milford Sound offers more scenic variety along the way. Doubtful Sound places more emphasis on the feeling of travelling deep into a remote part of Fiordland.
The Journey to Milford Sound
The drive to Milford Sound is considered a large part of the experience itself, not just a way to get there. The Milford Road passes through beautiful scenic stops like Eglinton Valley, Mirror Lakes, Lake Gunn, and the Cleddau Valley before arriving at Milford Sound.
There are multiple photo stops along the way, and even on cloudy days, there's plenty to see.
The Journey to Doubtful Sound
The journey to Doubtful Sound is via a series of separate legs (lake cruise, coach trip, fiord cruise) rather than a continuous scenic drive.
The Wilmot Pass coach trip travels through native rainforest, with a few viewpoints. On clear days, you get amazing views, but on cloudy days, much of the view can be obscured.
Once you arrive in Doubtful Sound itself, though, the remoteness of the fiord becomes very apparent, with few signs of human activity.
Accommodation Options
Staying in Milford Sound
Milford Sound has two accommodation options.
Milford Sound Lodge is the only land-based accommodation option in Milford Sound, located about 1.5km from the Milford Sound Visitor Terminal. The lodge offers chalet-style accommodation set among the rainforest, as well as a rainforest campervan park for self-contained vehicles.
There is also a Milford Sound Overnight Cruise run by RealNZ. The cruise departs Milford Sound in the late afternoon, anchors overnight in a sheltered cove, and returns the following morning.
The overnight cruise includes a chef-prepared dinner, kayaking or tender boat exploration, and a sunrise cruise the next day with an onboard nature guide.
Staying in Doubtful Sound
There is no land-based accommodation in Doubtful Sound, but you can stay overnight on the water.
The Doubtful Sound Overnight Cruise is run by RealNZ, with two-night stays available in the winter months and one-night stays available in the peak summer months.
Accommodation is in private cabins with ensuite bathrooms or more affordable quad-share bunk cabins, along with spacious viewing decks, a dining saloon, and an observation lounge.
The cruise itinerary starts with the Lake Manapouri crossing and the Wilmot Pass coach trip, before boarding the boat at Deep Cove. The cruise includes a buffet dinner and breakfast, kayaking and tender boat excursions, and commentary from an onboard nature guide covering the area's ecosystem and wildlife.
Wildlife Viewing
Milford Road Wildlife
The Milford Road drive provides many opportunities to see native birds. Kea, the world's only alpine parrots, are often seen around the Homer Tunnel and other high-frequency stops along the Milford Road. They're curious birds that tend to appear where people gather.
Weka, tomtits, robins, and other native birds can also be seen at various stops along the way.
Milford Sound Wildlife
Bottlenose dolphins visit Milford Sound regularly but spend much of their time elsewhere, so sightings aren't guaranteed.
Fur seals are easy to spot on Seal Rock and can be seen most days, and the rare Fiordland crested penguin (tawaki) can sometimes be seen between July and November during their breeding season.
Doubtful Sound Wildlife
Because the journey to Doubtful Sound involves fewer roadside stops, birdlife is less of a feature of the drive there than it is when driving to Milford Sound. However, Doubtful Sound is home to a resident pod of bottlenose dolphins, which are seen on cruises fairly frequently.
The fiord is also home to New Zealand fur seals, and is one of the better places to spot tawaki/Fiordland crested penguins.
Tawaki have nesting sites in Doubtful Sound and, because there are fewer people around, they're more likely to forage and be visible during the day.
Crowds and Atmosphere
Doubtful Sound is quieter and more remote than Milford Sound. If you don't mind sharing the experience with more people, Milford Sound is easier to reach and offers more flexibility in how you visit.
Milford Sound
Milford Sound is busier than Doubtful Sound. With self-drive access, multiple tour operators, and multiple cruise options, Milford Sound sees significantly more visitors per day than Doubtful Sound.
It’s common to see multiple cruise boats on the fiord and once, and in the busy summer season, there is often a steady stream of vehicles along the Milford Road during peak visitor times.
Although Milford Sound can get busy at times, it’s possible to time your trip strategically to avoid the crowds and enjoy a peaceful visit.
Doubtful Sound
With only one operator and the multi-leg access journey, visitor numbers are much lower in Doubtful Sound.
The fiord is known as the "Sound of Silence", and once you're on the cruise, the only other people you'll see are those on the boat with you. The captain also often turns off the engines at one point during the cruise to let passengers experience the natural silence of the fiord.
Road Closures
The Milford Road is more weather-sensitive and prone to road closures than the Doubtful Sound journey.
The Milford Road
The Milford Road can be closed for various reasons, including snowfall, ice, rockfall, flooding, and avalanche risk during winter and shoulder seasons. Closures can happen at short notice and can last anywhere from a few hours to a couple of days.
The Doubtful Sound Journey
The Doubtful Sound tour is less affected by road closures. The Lake Manapouri crossing and the Wilmot Pass road are both within a more sheltered area, and the tour generally continues to run on days when the Milford Road is closed.
Milford Road Closures on Tour Days
If your Milford Sound tour day is affected by a Milford Road closure and you can't change to another day, Doubtful Sound is often a viable backup option. At Luxe Tours, we can often re-route guests to the Doubtful Sound day tour if a Milford Road closure occurs, depending on availability.
Visiting Both
If your itinerary allows and you can’t decide between the two destinations, you can always visit both. You’ll need two full days to explore each fiord, so we recommend staying in Te Anau, as it’s the most convenient base for visiting both locations.
If you don’t want to self-drive to Milford Sound, you can book a two-day package that combines our small group Milford Sound day tour and RealNZ Doubtful Sound day tour.
The Milford tour runs on day one, and the Doubtful Sound tour runs on day two. Booking the package together means we handle the logistics, and there are savings across the package compared to booking each separately.
Both Milford Sound and Doubtful Sound provide unforgettable experiences of Fiordland National Park, but the experience of visiting each one differs.
Milford Sound might suit visitors wanting dramatic scenery combined with one of New Zealand’s most iconic drives, while Doubtful Sound might appeal to those looking for a more remote wilderness experience.
Whichever you choose, both destinations showcase the dramatic scenery and natural beauty Fiordland is known for.
Frequently Asked Questions
Is it worth visiting both Milford Sound and Doubtful Sound?
Yes, if your itinerary allows the time. While Milford Sound and Doubtful Sound share some similar Fiordland scenery and wildlife, the overall experience of visiting each one feels slightly different.
Milford Sound is smaller, with dramatic vertical cliffs and large waterfalls. Doubtful Sound is larger, with multiple arms stretching deep into Fiordland and a quieter, more remote atmosphere overall.
Milford Sound is also more accessible and combines the experience with the famous Milford Road journey, while Doubtful Sound involves a longer multi-stage journey to reach the fiord itself.
Many visitors choose to experience both over separate days, particularly if they are staying in Te Anau for multiple nights.
Is Milford Sound or Doubtful Sound Better?
There isn’t really a best or worst choice between the two, as both offer an incredible experience of Fiordland National Park.
Milford Sound is known for its dramatic scenery and the famous journey along the Milford Road. Doubtful Sound is more focused on the destination and gives a stronger sense of remoteness once you’re out on the water.
Some visitors prefer Milford Sound because it’s easier to access, while others are drawn to the quieter atmosphere of Doubtful Sound, but it all depends on your preferences. If your itinerary allows, it’s worth considering a visit to both.
How rainy is Milford Sound compared to Doubtful Sound?
Milford Sound is slightly wetter than Doubtful Sound, though both fiords are among the rainiest places in the world. Milford Sound receives around 7 metres of rainfall a year, while Doubtful Sound receives around 6 metres. Both areas have more than 200 rainy days per year.
