**Persistent summer heatwave conditions across the Korean Peninsula have driven trader consensus toward minimum temperatures of 27–28°C for Seoul/Incheon on August 7.** Official Korea Meteorological Administration guidance and ensemble model runs indicate tropical nights with overnight lows remaining at or above 25°C through early August, supported by warm advection, high humidity, and limited nocturnal cooling under mostly clear skies. Recent short-range forecasts show daytime maxima near 36–39°C, consistent with climatological peaks for the period, keeping minimums elevated rather than allowing typical radiative cooling. Updated model consensus has narrowed expectations around 27–28°C, aligning with the market’s heavy weighting on these outcomes while assigning low probability to cooler thresholds that would require an unexpected frontal passage or increased cloud cover.