Forecasts for Jeddah on August 25 point to a minimum temperature near 29–31°C under stable high-pressure conditions, with partly cloudy skies, light northwest winds, and Red Sea humidity sustaining overnight warmth above seasonal norms. Recent observations show August running 2–3°C warmer than the 27°C climatological average low, driven by minimal cloud cooling and consistent subtropical flow. Traders balance the 24°C-or-below and 34°C-or-higher outcomes near 42.5% each because global and regional models diverge on exact radiative cooling rates overnight, influenced by variable dew points around 20–24°C and wind speeds of 2–5 m/s that can either enhance or suppress the diurnal drop. Upcoming model runs and local station data will clarify whether sea-breeze effects or thin high clouds push the low toward the middle bins clustered at 26–33°C.