Persistent drought conditions across the Rhine basin, driven by below-average alpine snowfall last winter and minimal summer rainfall, have kept water levels at historic lows as of early September 2026, with key gauges such as Kaub registering around 31 cm amid high disruption odds for shipping. Trader consensus splits nearly evenly between a mid-to-late September rebound and an October recovery because short-term precipitation forecasts remain uncertain, while the low probability assigned to a pre-September 15 return reflects the entrenched dry pattern and limited immediate relief expected from current weather models. A sustained wet period in the upper catchment could accelerate normalization within the September window, whereas continued high-pressure dominance would likely extend low-flow conditions into October or beyond.