**Trader sentiment for Jeddah’s September 5 minimum temperature reflects closely matched probabilities around the 25–30°C range, driven by typical late-summer coastal conditions and limited model spread in recent forecasts.** Jeddah’s Red Sea location produces high humidity that slows nighttime radiative cooling, keeping overnight lows elevated compared with inland areas. Current forecasts from multiple sources indicate the minimum will likely fall between roughly 30–32°C, supported by light northwest winds, partly cloudy skies, and stable high pressure that prevent significant cooling. This setup favors outcomes near 30°C while making a drop to 25°C or below less probable absent an unexpected surge in wind or clearer skies that enhance heat loss. Historical September climatology shows average lows near 28–30°C, but persistent warmth this week—tied to regional heat patterns and minimal cloud variability—has kept recent nights warmer. With probabilities clustered tightly and no major forecast shifts in the past 24–48 hours, traders appear to weigh the balance between typical coastal moderation and the chance of modest additional cooling before dawn. Upcoming official observations from Jeddah stations will resolve the market as the night progresses.