Trader sentiment centers on Jeddah's typical August peak of around 38°C, with forecasts from multiple models converging on 37–39°C highs under clear skies and moderate Red Sea-influenced humidity. Key differentiators include daytime solar insolation intensity, sea-breeze advection from the northwest that can cap or elevate readings by 1–2°C, and urban heat-island effects in the coastal city. Current model consensus and preliminary observations favor 38°C as the mode, while any late-afternoon wind shift or thin cloud cover could tip the daily maximum toward 37°C or push it to 39°C. The modest probability on 40°C+ reflects historical rarity absent a strong heat anomaly. Updated observations from the Saudi National Center for Meteorology will resolve the market.