When temperatures soar above 30°C, the temptation to take a dip in the Seine or the canals of Paris can be quite strong. Just take a look at the many adventurous swimmers you see daily during heatwaves, diving from the bridges of the Canal Saint-Martin. But be careful: these waters are neither swimming pools nor beaches. Besides being strictly forbidden, swimming outside of authorized areas poses real dangers to safety, health… and your wallet. Let’s take a look at the risks to avoid this summer.
The Parisian canals: a waterway network, not a pool
The canals of the capital form a network of over 130 km, designed primarily for navigation. Transporting goods, cruises, leisure boats… the back-and-forth traffic is constant, and jumping in for a refreshing swim is like throwing yourself right into a busy water-based thoroughfare.
Watch out for boats!
Unlike land vehicles, boats are slow to maneuver. They can't stop suddenly or swerve easily.to avoid an obstacle. Swimming nearby increases the risk of a collision, especially with the rise of small rental boats without licenses. Drivers don't always react in time.
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Locks: very dangerous currents
On the Saint-Martin Canal and the Saint-Denis Canal, the opening of the locks creates powerful currents that can pull a person underwater. These mechanisms cannot be stopped quickly. Even when closed, a lock does not necessarily guarantee safety, as water level regulations can still pose risks.can generate sudden movements.
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Deceptive aquatic plants
Invisible from the shore, underwater vegetation also poses a danger. Some plants can wrap around your body and prevent you from coming back to the surface. Besides trapping swimmers, they make it harder for rescue teams to intervene.
Jumping off a bridge: prohibited and risky
Even though it might seem tempting, jumping from a bridge or walkway is strictly forbidden. The canals are shallow (2 to 3 meters), and submerged objects can be found at the bottom. The impact can lead to serious injuries, or even worse.
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Where to Swim Safely in Paris in 2025 ?
Fortunately, the city of Paris offers two monitored and secure swimming areas during the summer :
Bassin de la Villette : open from July 5 to September 7, 2025.
Bassin des Récollets : open every Sunday from July 6 to August 31, 2025.
These spacesThey are supervised by lifeguards, with the water quality regularly monitored.
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Wild Swimming, Guaranteed Fine
In France, it's illegal to swim in the canals, the Seine, fountains, or Parisian lakes outside designated areas. This isn’t just a friendly reminder: breaking this rule can lead to a Class 1 fine.
38€ is the flat-rate amount that the police or prefecture typically applies in practice.
€15, an old reference linked to a decree from 1923, still mentioned sometimes, but outdated.Today, the rate set by the authorities is €38, with no surprises or possible negotiations.
Summer 2025 is shaping up to be warm, so let's stay cautious to keep it beautiful!