Forecast models indicate a modest temperature peak for Istanbul on August 29 driven by increased northerly flow and intermittent cloud cover following showers on the 28th. Official guidance from sources such as the Met Office, Tutiempo, and Ventusky places daytime maxima between 25–28 °C, with several runs clustering near 25–26 °C under partly cloudy skies and moderate northeast winds that limit diurnal warming. This aligns with a broader late-August cooling trend relative to seasonal averages near 28–29 °C, as reduced insolation and boundary-layer mixing suppress the highest readings. Trader sentiment favoring 24–25 °C reflects these near-term model signals and the low likelihood of rapid clearing that would allow stronger surface heating. Updated ensemble runs and regional observations over the next 24–48 hours will refine the exact maximum before market resolution.