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Start your day with a refreshing morning swim in Lake Mälaren! Join SIWI, the City of Stockholm, Swimmable Cities and partners on Thursday, 27 August, from 06:45 to 08:00 at Marieviksbadet, Stockholm, to celebrate World Lake Day during World Water Week 2026. Together with World Water Week participants, Stockholmers and visitors—including Swedish Olympic swimming medallist Therese Alshammar—we'll celebrate the vital role healthy lakes and freshwater ecosystems play in supporting people, nature and communities.
Date
27 Aug 2026, 06:45 CET
Why World Lake Day?
World Lake Day celebrates the importance of lakes and freshwater ecosystems to people, nature and society. Lakes provide drinking water, support biodiversity, strengthen climate resilience and create opportunities for recreation and wellbeing. The day is an opportunity to celebrate what healthy lakes make possible while highlighting the importance of protecting freshwater ecosystems for future generations.
Why celebrate during World Water Week?
Taking place on the final day of World Water Week, World Lake Day connects global water discussions with people’s everyday relationship to lakes and freshwater ecosystems. With thousands of water leaders already gathered in Stockholm, the celebration extends the conversation beyond the conference venue and into the city, bringing together international delegates, Stockholmers and visitors around one of Stockholm’s defining assets—its water.
Why Stockholm?
Few cities are better placed to celebrate World Lake Day. Water is central to Stockholm’s identity, attractiveness and quality of life. The ability to swim in Lake Mälaren is something many people take for granted, yet it reflects decades of environmental protection, scientific monitoring and investment in water management.
Today, Lake Mälaren provides drinking water to around 2 million people while supporting recreation, biodiversity and tourism. Gathering at the water’s edge is therefore more than a morning swim—it is a celebration of what long-term stewardship can achieve and a reminder of why healthy freshwater ecosystems matter.
Join us
Whether you choose to swim, take a quick dip or simply enjoy the morning by the water, everyone is welcome.
Date: Thursday, 27 August 2026
Time: 06:45–08:00
Location: Marieviksbadet, Stockholm – a public bathing area on Lake Mälaren, approximately a 10-minute walk from Liljeholmen metro station (Red Line) and around 15 minutes by metro from Stockholm Central Station.
Participation: Free of charge. Register here.
Participation is at your own risk and responsibility. Participants are expected to follow local swimming guidelines and any instructions provided by event organizers.