**Trader consensus on a 26°C high for Seoul/Incheon on September 9, 2026, reflects convergent official forecasts and real-time observations from the Korea Meteorological Administration (KMA) and international models.** Current data show daytime temperatures climbing steadily under partly cloudy skies with light easterly to northeasterly winds and low precipitation probability, peaking near 26°C (approximately 79°F) by mid-afternoon before cooling overnight. This aligns with climatological September averages (daily highs typically 24–26°C) and follows several warmer days earlier in the month when maxima reached 29–31°C. Model runs from sources including the Met Office and local guidance indicate minimal deviation risk, with resolution hinging on the precise maximum recorded at the reference station (likely Incheon International Airport or Seoul). Unlikely shifts could arise from localized microclimate differences, revised station readings, or unexpected late-day warming, though current conditions strongly support the market-implied outcome.