Paris city officials opened the Canal Saint-Martin for supervised swimming on Wednesday evening, 17 June 2026 [1].
The move provides a critical cooling resource for residents as France prepares for a severe heatwave. With temperatures rising rapidly, the city is implementing emergency measures to protect public health and reduce heat-related distress in the urban center.
Mayor Anne Hidalgo and Deputy Mayor Emmanuel Grégoire said the waterway is open [2]. The decision comes as meteorological forecasts indicate that temperatures in some areas could reach 36-37°C before peaking at 40°C [3].
Supervised swimming allows the public to access the water in a controlled environment. City officials said the canal will serve as a relief point for those without access to air conditioning or private pools during the temperature spike.
The opening of the canal is part of a broader strategy to adapt the city's infrastructure to extreme weather events. By transforming existing waterways into temporary recreational zones, Paris aims to mitigate the "urban heat island" effect that often traps heat in densely populated districts.
While some reports have mentioned the Seine River, city officials said the Canal Saint-Martin is the site for this swimming initiative [2]. The supervised nature of the event is designed to ensure swimmer safety, and maintain water quality standards during the period of high usage.
“Paris city officials opened the Canal Saint-Martin for supervised swimming”
The decision to open the Canal Saint-Martin reflects a shift in urban management toward 'adaptive infrastructure.' As heatwaves become more frequent and intense, cities are forced to repurpose historical and industrial waterways into public health assets to prevent heat-stroke and mortality among vulnerable populations.
