Recent forecasts from major models project Jeddah’s August 23 maximum near 38–39 °C under persistent high pressure, clear skies, and strong solar heating over the Red Sea. Typical August climatology centers on 37 °C daytime highs with overnight lows near 30 °C; the current setup shows modest positive anomalies from above-average sea-surface temperatures that enhance heat and humidity retention. Light northwesterly winds and morning cloud cover may cap extremes at 38 °C, while clearer conditions or reduced sea-breeze timing could push readings to 39 °C. Ensemble spread remains narrow because large-scale steering patterns are stable, keeping the market tightly clustered between these two outcomes rather than higher or lower thresholds. Updated model runs and official Saudi meteorological guidance over the next 48 hours will refine the exact peak.