Recent global and regional forecast models, including runs from the Korea Meteorological Administration, indicate a June 17 maximum in Seoul near 28–29 °C under partly cloudy skies with light southerly flow. Trader consensus clusters tightly around these values because modest differences in afternoon cloud cover or brief shower timing can shift peak readings by 1–2 °C through reduced solar insolation and altered boundary-layer mixing. Early June observations show temperatures tracking near seasonal normals of 27–30 °C, with no strong blocking patterns or monsoon onset signals yet altering the setup. Fresh model guidance expected within 24 hours will likely refine the precise threshold as resolution approaches.