**Trader sentiment for Jeddah’s August 25 minimum temperature reflects tight uncertainty around a typical late-summer coastal minimum.** Official forecasts and recent observations indicate overnight lows of 30–32 °C, consistent with Jeddah’s Red Sea location, persistent northwesterly flow, and high humidity that limits radiative cooling. Historical August averages place nighttime minima near 28–30 °C, while current model runs from multiple sources show little day-to-day variation and no significant synoptic cooling ahead. The near-even split between 24 °C-or-below and 34 °C-or-higher outcomes, alongside clustered probabilities around 30–31 °C, captures small differences in forecast timing, urban heat-island effects, and measurement thresholds at the official station. With resolution two days away, updates to short-range model guidance on wind speed and cloud cover remain the key variables that could shift the exact recorded minimum.