**Trader sentiment on the Rhine's return to normal levels remains tightly balanced because the river sits at historic lows (Kaub gauge near 31 cm) after an unusually dry 2026 season marked by record-low flows, below-average Alpine precipitation, and repeated heat-driven evaporation.** Temporary August rainfall eased conditions briefly but has since reversed amid renewed dry weather, leaving gauges well below seasonal norms and navigation restricted. Hydrological outlooks from sources like the BfG indicate persistent low-water risk through mid-September, with recovery hinging on sustained autumn rainfall to rebuild flows. This uncertainty—coupled with variable short-term precipitation forecasts and the river's typical seasonal uptick only in late fall—keeps September 15–30 and October outcomes closely matched around 50 percent each, as modest additional rain or continued dryness could shift timelines by weeks.