Recent forecast guidance from the Korea Meteorological Administration and ensemble models points to a stabilizing high-pressure system over the Korean Peninsula after early August's extreme heatwave, favoring partly cloudy to mostly sunny conditions on August 18 with daytime highs centered near 30–32°C in the Incheon/Seoul area. Traders have clustered probabilities around 30°C (36%) and 31°C (29%) because model runs show limited afternoon heating potential from modest humidity and variable cloud cover, while steering patterns reduce the risk of stronger onshore flow. Historical August climatology for Incheon places average daily maxima near 29–31°C, providing context for why 32°C or higher remains a lower-probability tail (under 16% combined) absent unexpected clear skies or warmer advection. Updated model guidance ahead of the 48-hour window will refine these ranges.