Recent forecast models from sources including NOAA analogs and regional meteorological services indicate a high near 24°C for Busan on October 4, with partly cloudy skies, northeast winds of 7–10 mph, and a modest chance of light drizzle limiting daytime heating. Trader consensus splitting between 25°C and 26°C reflects uncertainty in afternoon solar insolation under variable cloud cover and potential for slightly stronger southerly flow to boost readings by 1–2°C above baseline autumn averages. Historical October highs in Busan average 23–24°C, providing context for the tight 42.5%–38.5% split. Final surface observations and any late model runs will determine resolution as the date approaches.