Current model consensus from European and global ensembles points to Istanbul maximum temperatures of 27–29°C on August 12 under stable late-summer conditions, with moderate northerly flow and scattered cloud cover limiting peak insolation. This aligns with August climatology showing mean daily highs near 28°C at the official station and explains the market’s tight clustering around those outcomes, as ensemble spread remains low absent significant warm advection or subsidence. Short-range guidance from agencies including the Turkish State Meteorological Service indicates surface peaks will likely stay at or just below recent observed values, with any upside to 30°C or higher requiring an unforecasted mesoscale event. Traders are thus weighting the 28°C outcome most heavily while assigning meaningful probability to adjacent values given normal forecast uncertainty this close to the date.