Korea Meteorological Administration observations show minimal precipitation accumulation in Seoul through mid-April 2026, with totals well below seasonal norms, driving trader consensus toward under 40mm at 46% implied probability—far drier than the historical April average of 65-80mm. Persistent high-pressure systems over the Korean Peninsula have suppressed moisture inflow and frontal activity, favoring clear skies and mild temperatures that limit convective rainfall. Recent KMA short- and medium-range forecasts indicate continued low precipitation probabilities through month's end, though model ensembles note slight uncertainty from potential late-month yellow dust events or weak fronts. This positions higher bins like 65-70mm at just 14.5%, reflecting aggregated trader assessment of climatological baselines against current dry signals.