Paris opened a section of the Canal Saint-Martin for swimming on June 23, 2024, to provide residents relief from extreme heat [1, 2].
The move highlights the urgent need for urban cooling strategies as European cities face increasingly frequent and severe temperature spikes. By repurposing city infrastructure for public cooling, officials aim to mitigate the health risks associated with prolonged exposure to high temperatures.
Temperatures in the city rose above 40 °C on June 23, 2024 [1]. This spike occurred during a period that officials said was the worst heatwave in the history of France [1, 2].
Parisians flocked to the canal to escape the suffocating conditions that gripped the capital [2]. The decision to open the waterway was a direct response to the exceptional heat that made traditional indoor environments and paved streets unbearable.
The Canal Saint-Martin typically serves as a scenic waterway for boating and walking, but the current climate emergency necessitated a change in usage. Residents used the water to lower their body temperatures and find respite from the scorching air [1, 2].
City authorities implemented the measure to ensure that the population had accessible means of cooling during the peak of the heatwave. The use of the canal reflects a broader trend of urban centers adapting their public spaces to handle extreme weather events, a necessity as historical temperature records continue to be broken.
“Paris opened a section of the Canal Saint-Martin for swimming”
The emergency opening of the Canal Saint-Martin signals a shift in urban management, where static infrastructure must become flexible to protect public health. As France experiences its worst heatwave on record, the reliance on natural water bodies for cooling suggests that traditional air conditioning and indoor cooling may be insufficient for entire metropolitan populations during extreme climate events.



