Forecasts from ECMWF and other models indicate Jeddah's minimum temperature on September 26 will likely fall between 28–31°C, reflecting typical late-summer Red Sea coastal conditions with northerly winds of 3–7 m/s, clear to mostly clear skies, and elevated dew points near 23–25°C that restrict nocturnal radiative cooling. High sea-surface temperatures sustain warm advection and humidity levels above 70% overnight, while the absence of significant cloud cover or frontal systems keeps the range narrow. Trader consensus across closely matched outcomes near 26°C, 30°C, and higher thresholds captures remaining uncertainty from local urban heat-island effects, precise timing of the daily minimum, and minor model discrepancies in boundary-layer mixing. Updated runs from agencies like NOAA and local meteorological services will refine these values ahead of resolution.