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Denmark
North Denmark

Nationalpark Thy

Top 17 Lakes in Nationalpark Thy

Lakes in Nationalpark Thy are a defining feature of Denmark's first national park, characterized by a landscape shaped by sea, wind, and sand. The region is home to over 200 dune lakes, many of which are known for their clear freshwater. These lakes often originated as sea bays that became cut off from the North Sea due to land elevation after the last ice age. The area provides a unique natural environment for various plant species and outdoor activities.

Best lakes in Nationalpark Thy

  • The most popular lakes is Per Madsens Kjær, a lake that offers a place to rest. Lots of hiking trails are available around it.
  • Another must-see spot is Lakeside swimming and picnic area with fire pit, a lake with facilities for groups. It also provides an entrance for swimming.
  • Visitors also love Lake Nors, a lake known for its clear waters and unique plant life. It is a popular spot for bathing and is under nature protection.
  • Nationalpark Thy is known for its dune lakes and karst lakes. These lakes offer diverse natural experiences.
  • The lakes in Nationalpark Thy are appreciated by the komoot community, with more than 80 upvotes and 85 photos shared.

Last updated: May 17, 2026

Per Madsens Kjær

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There is a place to rest at the lake. Lots of hiking trails around.

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Lake Nors

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The lake Nors Sø is a karst lake. In contrast to most of the other lakes in Denmark, this lake has almost no reed cover. Instead, rare aquatic plants grow here. The lake, which is under nature protection, is beautifully situated on the border of the Hanstholm Game Reserve and the dune forests of Tved and Vilsbøl.

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Picnic Island at the Forest Lake

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Nice rest stop, if one of the moorige smell does not bother.

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Wooden Dock at Vandet Sø

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The 480 hectare and up to 21 meters deep Vandet Sø is one of the cleanest lakes in Denmark. It is a so-called karst lake. So a nutrient-poor lake with a limestone bottom, into which the water flows through cracks in the limestone.
At this point there is a beautiful, typically Danish 🇩🇰 picnic area 🧺, as well as a wooden walkway.

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Vandet Lake

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A nice view of the not so small lake 😊. However, no seating is nearby, so rather unsuitable for a break ....

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Tips from the Community

Bertel
December 14, 2025, Per Madsens Kjær

Thy Walk'N Run

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I really enjoyed swimming in it. You could stand anywhere. 😉

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The lake has largely dried up (as of August 2025). Although Danish brochures still advertise it as a swimming spot, swimming is no longer permitted there. However, a picnic table is still there.

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A small, beautifully situated forest lake with a sandy beach and picnic bench. The water was clear. Swimming is permitted, but we didn't test whether it was deep enough.

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Nice place to stay and relax.

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Tuxa
September 20, 2023, Per Madsens Kjær

There is a place to rest at the lake. Lots of hiking trails around.

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Beautiful spot. And you can also enjoy swimming there. If the weather is good.

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Complete deceleration is guaranteed

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Frequently Asked Questions

What makes the lakes in Nationalpark Thy unique?

The lakes in Nationalpark Thy are primarily dune lakes, formed from ancient sea bays that were cut off from the North Sea as the land rose after the last ice age. Many, like Nors Sø and Vandet Sø, are known for their exceptionally clear freshwater and low nutrient levels, supporting unique plant species found almost nowhere else in Denmark. The park is home to over 200 such lakes, offering a distinct natural environment.

Which lakes are best for swimming in Nationalpark Thy?

Nors Sø is a popular choice for swimming due to its clear waters and available facilities like benches and grills at designated areas. Vandet Sø is also recognized as one of Denmark's purest lakes and is generally excellent for swimming, though it's advised to avoid its eastern end. You can find a dedicated swimming spot at the Lakeside swimming and picnic area with fire pit.

Are there family-friendly activities or lakes in Nationalpark Thy?

Yes, several lakes and areas are suitable for families. Highlights like Lake Nors, Wooden Dock at Vandet Sø, and the Lakeside swimming and picnic area with fire pit are marked as family-friendly. Nationalpark Thy also offers various activities for families, which you can explore further on their official website: nationalparkthy.dk.

Can I go hiking around the lakes in Nationalpark Thy?

Absolutely. Many lakes, including Per Madsens Kjær, have numerous hiking trails around them. You can find a variety of routes, including easy hikes, in the region. For detailed hiking options, check out the Easy hikes in Nationalpark Thy guide.

What are some of the most popular lakes for visitors in Nationalpark Thy?

Visitors frequently enjoy Per Madsens Kjær, known for its resting spots and hiking trails. Lake Nors is also very popular for its clear waters and unique plant life, making it a favorite for bathing. The Lakeside swimming and picnic area with fire pit is another well-loved spot for groups and swimming.

What kind of wildlife and plant life can I expect to see around the lakes?

The low nutrient levels in lakes like Nors Sø and Vandet Sø support distinctive and rare aquatic plant species. The surrounding areas are part of a national park, so you might encounter various bird species. Notably, the area around Nors Sø was where the first wolf in Denmark in over 200 years was photographed in 2012, indicating a rich natural environment.

Are there facilities like picnic areas or fire pits at the lakes?

Yes, some lakes offer facilities for visitors. For instance, the Lakeside swimming and picnic area with fire pit provides space for groups, a fire pit, and an entrance for swimming. The Wooden Dock at Vandet Sø also features a beautiful picnic area and a wooden walkway.

What is the best time to visit the lakes in Nationalpark Thy?

The best time to visit depends on your preferred activities. For swimming and enjoying the outdoors, the warmer months from late spring to early autumn (May to September) are ideal. Birdwatching can be excellent during migration seasons in spring and autumn. The unique landscape offers beauty year-round, but facilities and weather conditions are most favorable in summer.

Are there cycling or mountain biking routes near the lakes?

Yes, Nationalpark Thy offers various cycling and mountain biking opportunities. You can find routes like the 'Panorama Route 410: Experience the Forces of Nature' for touring bicycles or the 'Vilsbøl Klitplantage loop' for mountain biking. Explore more options in the Cycling in Nationalpark Thy guide and the MTB Trails in Nationalpark Thy guide.

How can I reach the lakes in Nationalpark Thy using public transport?

While specific public transport routes directly to every lake might be limited, the Nationalpark Thy area is served by regional buses. Planning your trip in advance and checking local bus schedules is recommended. For detailed information on reaching the park, you may consult the official Nationalpark Thy website: nationalparkthy.dk.

Are there any specific lakes known for their exceptional water clarity?

Yes, both Nors Sø and Vandet Sø are renowned for their exceptional water clarity. Vandet Sø, in particular, is recognized as one of the purest lakes in Denmark, with visibility often extending up to seven meters. This clarity is due to their origin as karst lakes with low nutrient content.

Where can I find easy walking trails around the lakes?

Many of the lakes are surrounded by accessible trails. For example, Per Madsens Kjær offers numerous hiking trails suitable for various skill levels. You can find a selection of easy walks and hikes in the Easy hikes in Nationalpark Thy guide, which includes routes like the 'Tved Klitplantage loop'.

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Still not found your perfect lake in Nationalpark Thy? Check out the guides of these regions to see even more beautiful places.

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