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Lake

Himmelsøen

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About

Explore this spot near Roskilde. Great spot for swimming and paddling, kayaking, canoeing, surfing, supping, wind surfing, body surfing, body boarding and kiteboarding. Roskilde is a city located in the Roskilde Municipality in the Region Zealand of Denmark. The area is known for its beautiful countryside, scenic coastlines, and serene forests. The landscape is dotted with picturesque lakes and rivers and offers plenty of opportunities for outdoor activities such as hiking, cycling, and fishing. Roskilde itself is home to many historic landmarks, including the Roskilde Cathedral, a UNESCO World Heritage Site, and the Viking Ship Museum. The city is also known for its annual Roskilde Festival, one of the largest music festivals in Europe, which takes place in early summer.

Location

What swimmers say

Activities

Swimming

Water sports

Surfing Kayaking SUP Bodyboarding Body surfing Canoeing Windsurfing Kiteboarding

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Plan your swim

Before you go

  • Cold water shock is real. Enter slowly and control your breathing.
  • Lake water can be much colder below the surface (thermocline)
  • Stay close to shore until you know the conditions
  • Watch for boat traffic and stay visible with a tow float
  • Check for blue-green algae warnings before swimming

Conditions change fast. Always check the latest data, read recent community reports, and swim within your ability.

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Frequently asked questions

Is this lake safe for swimming?

Check the Conditions tab for surface state and wind conditions. Review the Quality tab if this is a designated bathing water. Always read recent community reports for local advice.

How cold is the water?

Check the Temperature tab for the current estimate and 7-day trend. Lakes hold heat longer than rivers but can develop a thermocline. The water below the surface can be dramatically colder.

What should I bring?

A tow float for visibility (especially important where boats operate), warm layers for after, and consider a wetsuit in colder months. Check for designated swimming areas.