Seine water levels in May

For May 2027 the Seine shows a 83% chance a cruise runs as planned: moderate. It reflects the thirty-year record for May; the live forecast reaches this month about seven months out.

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.

May normally sees the Seine settle into its safe season. High water needs a genuinely exceptional spring from here on.

The long record has May running as planned in about 83% of years, 9th calmest of the twelve months on the Seine. Book September or July for the calmest water; March and February are the months to check before you commit.

The last five Mays, from the official record: 2026 clear · 2025 clear · 2024 3 high water days · 2023 clear · 2022 clear. 2026, 2025, 2023 and 2022 came through May clear; 2024 did not.

To turn this into a date-specific answer, use the cruise checker. The wider picture is on the Seine page and in when to go.