Danube water levels in April

For April 2027 the Danube stands at 10% low water risk at its shallowest stretch: moderate. It reflects the thirty-year record for April; the live forecast reaches this month about seven months out.

April rides the strengthening snowmelt. The mountains release winter's storage week by week, and levels build toward their early-summer best.

Across thirty years of records, April brought low water to the Danube in about 10% of years, 2th calmest of the twelve months. The calmest months here are May and April; the most exposed are August and September.

The last five Aprils, from the official record: 2026 1 low water day · 2025 3 low water days · 2024 clear · 2023 clear · 2022 clear. 2024, 2023 and 2022 came through April clear; 2026 and 2025 did not.

Affected rarely means canceled. On the Danube it means ship swaps or bus days on the shallow reach between Straubing and Vilshofen and through the Wachau valley.

Sailing on specific dates? The cruise checker scores your exact window, day by day. For the whole season, see when to go or the full Danube page.