Recent short-range forecasts from the Korea Meteorological Administration indicate a daily maximum near 34°C for Busan on August 12 under mostly clear morning conditions transitioning to increased afternoon cloud cover, driven by the persistent influence of the North Pacific high-pressure system and warm, humid southerly flow. Coastal sea breezes and variable low-level moisture introduce key uncertainty, potentially capping peaks at 30–32°C if clouds thicken earlier or winds strengthen, while clearer skies could allow brief excursions toward 33°C. Historical August climatology shows typical highs of 29–31°C, making model spread on timing of cloud development and localized marine effects the primary differentiators among closely matched market outcomes. Updated KMA guidance and observational data ahead of peak heating will likely refine the implied probabilities.