Recent numerical weather model consensus from sources including GFS and ECMWF points to a maximum temperature near the seasonal August average of 29°C for Istanbul, driven by typical Mediterranean high-pressure conditions, clear to partly cloudy skies, and moderate northeasterly winds limiting heat buildup. Current observations and hourly guidance show afternoon peaks climbing to 29–30°C amid low humidity and negligible precipitation, aligning with historical norms where August highs average 28–30°C without unusual heatwave or cooling influences. Traders assign the highest implied probability to 29°C given this tight clustering of forecasts, though minor model spread around wind shifts or insolation could support a 30°C outcome.