Lake

Isonkiven Uimaranta

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About

Check out this spot in Masku. Popular location for swimming and paddling, kayaking, canoeing and supping. Masku is a municipality located in the region of Varsinais-Suomi near the city of Turku in southwestern Finland. The area is lush and green, with extensive forests, lakes, and rivers. The landscape is mostly flat, with a few gentle hills and valleys. The area around Masku and Turku is known for its beautiful archipelago, which consists of thousands of small islands, islets, and skerries. The coastlines are rocky, with sandy beaches and rocky cliffs. The region has a rich history and cultural heritage, with many historical sites, museums, and art galleries to visit. Overall, it is a picturesque and peaceful region of Finland, with plenty of natural beauty to explore.

Location

What swimmers say

Activities

Picnic Swimming

Water sports

Kayaking SUP 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.