Traders have converged on a 12°C minimum for Busan on October 8 at 95.5% implied probability because Korea Meteorological Administration model runs and supporting guidance show overnight radiative cooling under clear, high-pressure conditions will produce that exact low. Current observations indicate afternoon highs near 23–26°C with light northerly winds, setting up strong diurnal temperature swings typical for early October in the region. Historical climatology places average Busan lows around 15–17°C, yet the latest ensemble consensus favors the cooler outcome without significant cloud cover or warm advection to moderate it. Resolution hinges on the official KMA station reading; modest forecast revisions or localized urban heat effects remain the primary variables that could shift the final minimum.