Persistent drought across Central and Eastern Europe has driven Danube water levels to historic lows in August 2026, with multiple gauges reporting flows well below long-term averages and navigation restrictions in place on key stretches. Precipitation in the upper basin remains 43% below normal over the past 45 days, and near-term forecasts show continued deficits, limiting near-term recovery prospects. Hydrological models indicate that normalization depends on sustained rainfall events, which remain uncertain through early autumn, keeping September and October periods tightly bunched in trader pricing. The modest probability assigned to no recovery by November reflects the possibility of prolonged dry conditions, while any significant precipitation shift could quickly alter the timeline.