Recent Korea Meteorological Administration guidance points to a maximum near 32°C for Busan on August 17 amid partly cloudy skies and a 60% chance of afternoon showers, yet the narrow spread between 27°C, 28°C, and 29°C outcomes reflects trader focus on how early or intense convection may limit peak insolation and surface heating. Coastal humidity near 70–80% and the North Pacific high’s influence typically support seasonal highs of 29–31°C, but variable steering flows and model differences in timing of showers introduce modest downside risk to the daily maximum. Updated short-range runs and official observations issued overnight will further refine the implied probabilities ahead of resolution.