Lake

Puujarvi

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About

Explore this spot near Karjalohja. Great location for swimming and paddling, boating, kayaking, canoeing and walking. Karjalohja is a small town located in Uusimaa, approximately 70 kilometers west of Helsinki. Its surroundings are mostly rural, with forests, lakes and fields dominating the landscape. The area is known for its beautiful natural scenery, with numerous hiking trails and recreation areas available for visitors to explore. In Karjalohja itself, there are several notable landmarks and attractions, including the popular summer theater venue of Lohjan Kesäteatteri, and the Karjalohja Church, which dates back to the late 17th century. The town is also home to many quaint cafes and restaurants, serving local Finnish cuisine. Overall, Karjalohja and the wider Helsinki-Uusimaa region offer visitors a chance to experience the beauty of Finland's natural landscapes, while also exploring its rich cultural heritage.

Location

What swimmers say

Activities

Swimming Walking

Water sports

Kayaking Boating Canoeing

Help verify this spot

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.