Recent forecasts from the Korea Meteorological Administration indicate that Seoul will likely experience a mild late-spring day on May 18, with daytime heating under generally clear skies and light southwesterly winds favoring maximum temperatures of 25°C or higher. This outlook aligns with climatological patterns for mid-May, when average highs reach 23–26°C amid lengthening daylight and the gradual retreat of cooler northerly air masses. Model consensus shows limited day-to-day variability, with no significant frontal systems expected to suppress warmth before the observation period closes. Traders have priced in this stability, assigning over 78% implied probability to the 25°C threshold while assigning minimal weight to cooler outcomes that would require an unseasonal cold surge.