Ongoing extreme heatwave conditions across South Korea, with KMA-issued severe warnings and nighttime heat advisories for the Seoul-Incheon area, are anchoring trader expectations for an elevated minimum temperature near 27–28°C at Incheon International Airport on August 8. Strong subsidence, clear skies, and high humidity are limiting nocturnal radiative cooling, keeping overnight lows well above the seasonal baseline of roughly 22–23°C. Urban heat island effects in the densely developed corridor further elevate readings, consistent with recent observations of mid- to upper-20s°C minima. Short-range KMA model runs and any updates to steering patterns or moisture influx ahead of the date remain the key variables that could shift probabilities among the closely matched leading outcomes.