Recent forecasts for Busan indicate a highest temperature on October 10 likely in the 24–26°C range, driven by autumnal cooling under a strengthening high-pressure system with increasing onshore flow and cloud cover. Model consensus shows daytime highs tempered by scattered showers and higher humidity, limiting solar heating compared to clearer prior days. Historical October baselines average near 23°C, with recent runs from global ensembles placing the daily maximum around 25°C amid light easterly winds. Trader emphasis on 26–27°C outcomes reflects uncertainty in exact cloud timing and any last-minute clearing that could allow brief warming, while lower probabilities for 28°C+ align with the moist, stable pattern expected through the weekend. Updated KMA and ensemble guidance ahead of the date will refine these thresholds.