Trader sentiment for the August 17 Seoul/Incheon high centers on official Korea Meteorological Administration forecasts projecting a daytime maximum of 31–32°C amid partly cloudy skies and a 60% chance of afternoon showers. These conditions introduce variability in peak readings, as convective activity and increased humidity can suppress temperatures below model guidance or allow brief spikes if clearing occurs. Recent model consensus places the most likely outcomes at 29–30°C, consistent with typical mid-August patterns where highs average near 30°C but shift with steering flow and moisture. Upcoming KMA updates and any revised ensemble runs through the evening of August 16 represent the primary near-term catalysts that could tilt the closely matched 29°C and 30°C contracts.