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Paris Extends Seine Swimming at Two Sites Into September

City hall cites strong turnout, with continued access contingent on water quality checks, staffing, weather plus prefectural approval.

Deux des trois sites de baignade dans la Seine vont rester ouverts au début du mois de septembre, a annoncé la maire de Paris Anne Hidalgo mercredi 27 août 2025.
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Des baigneurs dans la Seine à Paris, le 12 août 2025
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Overview

  • Mayor Anne Hidalgo said Grenelle will stay open until September 7 and Bercy until September 14, with a final Bercy weekend on September 20–21.
  • Bras Marie will close on August 31, matching the original schedule for that site.
  • The city counts nearly 100,000 bathers this summer, including a mid‑August weekly peak of 23,500 entries after 35,000 in rain‑hit July.
  • Any September sessions depend on acceptable test results, lifeguard availability, logistics, weather conditions, and authorization from the Île‑de‑France prefect.
  • Supervised swimming follows major upgrades to sewage and stormwater systems, including the Austerlitz retention basin, with daily monitoring and rain-triggered closures.