Seine water levels in September

For September 2026 the Seine stands at 1% high water risk at its tightest bridges: low risk. This comes from the live forecast and is updated every morning.

September stays quiet as the Seine's catchment sits dry from summer. The flood season is still months away.

September has hit high water in roughly 0% of the past thirty years on this river, 3th calmest of the twelve months. July and August run calmest on the Seine, March and February riskiest.

The last five Septembers, from the official record: 2025 clear · 2024 clear · 2023 clear · 2022 clear · 2021 clear. All five recent Septembers came through clear.

On the Seine the risk runs the other way: high water. Too little clearance under the Paris bridges pauses sailings and closes moorings. The river never dries out. It rises.

For your own dates, the cruise checker scores the exact window day by day. The Seine page carries the live gauges, and when to go compares all four rivers.