Recent Korea Meteorological Administration forecasts for Seoul point to a typical mid-May diurnal warming cycle under transitional spring conditions, with ensemble models converging on a daily maximum in the 23–25 °C range. Light southerly flow ahead of a weak trough is expected to advect modestly warmer air, while variable cloud cover and light winds will limit extreme surface heating. Historical climatology places May 19 averages near 23 °C, and current guidance shows no strong high-pressure ridge or clear-sky anomaly that would push readings to 26 °C or above. Traders are therefore weighting the closely bunched 23–25 °C outcomes, awaiting the final 48-hour model runs and local observations that will determine the precise peak.