Recent short-range forecast guidance from meteorological services points to stable Mediterranean summer conditions in Istanbul, with daytime maxima likely reaching 28–29°C on August 4 under mostly sunny skies, light northerly winds, and moderate humidity that limits extreme heating. Ensemble models show low variance around these values, consistent with climatological August averages of 28–30°C and the absence of heat-wave setups or strong warm-air advection from continental interiors. Sea-breeze effects from the Bosphorus and Black Sea further moderate peaks, keeping probabilities for 30°C or higher modest at roughly 18% combined. Traders have aligned closely with these data, pricing 28°C and 29°C as the clear leading outcomes while assigning minimal weight to outliers below 27°C or above 31°C. Updated model runs and official Turkish Meteorological Service guidance expected in the next 24–48 hours remain the key near-term catalysts.