Trader consensus has coalesced around a 25°C high in Busan on September 29 due to real-time surface observations and model guidance from agencies such as the Korea Meteorological Administration. Current readings hover near 23–24°C under easterly flow, with afternoon peaks limited by persistent cloud cover, light rain episodes, and moderate humidity around 70%. Historical September baselines and ensemble forecasts align closely with this threshold, producing minimal divergence in projected maxima. A realistic shift could occur only if unexpected clearing allows greater insolation or if steering patterns strengthen onshore flow, pushing readings above the modeled cap before evening cooling sets in.