**Trader sentiment for the lowest temperature in Seoul (Incheon) on August 6 centers on 27–28°C as the most likely overnight minimum, reflecting tight consensus in current numerical weather prediction outputs.** Forecast models from the Korea Meteorological Administration and international ensembles indicate clear to partly cloudy conditions overnight into August 6, with light winds and moderate humidity limiting radiational cooling. Incheon's coastal location benefits from marine influence that typically holds minimum temperatures a few degrees above inland Seoul values, while the urban heat island and high dew points (often near 25°C in peak summer) further suppress the drop. Recent days have shown overnight lows stabilizing in the mid-to-upper 20s amid a persistent warm, moist air mass, supporting the market's narrow spread between the 27°C and 28°C outcomes. Minor model differences in boundary-layer mixing and cloud timing create the observed uncertainty, with any increase in low-level moisture or wind shear potentially nudging the minimum slightly higher and reduced cloud cover allowing a brief dip toward 26°C. Resolution will hinge on the official Incheon station reading between roughly 3–9 a.m. local time on August 6.