Severe drought and successive heat waves across Central and Eastern Europe have driven the Danube to record lows as of mid-August 2026, with Budapest gauges hitting historic minima that disrupt commercial navigation, hydropower output, and tourism. Satellite imagery confirms sharply reduced flows compared with prior years, and forecasters note little near-term relief from additional dry conditions. Seasonal patterns indicate that increased autumn rainfall typically replenishes Central European river basins, supporting trader consensus around an October rebound as the most probable window. Earlier September recovery remains possible if frontal systems arrive sooner, while probabilities decline sharply for sustained shortfalls beyond early fall given historical base rates for post-summer recharge.