Recent forecasts for Jeddah on August 28 show daytime maxima centered around 37–41 °C amid typical late-summer conditions, with model runs differing on peak timing and the strength of Red Sea moisture advection. Low-level winds, surface pressure gradients, and cloud cover variability create narrow uncertainty bands that separate adjacent temperature buckets, while high humidity and urban heat-island effects add minor local modulation. With no major synoptic systems approaching and climatological August averages near 38 °C, trader sentiment reflects genuine dispersion across short-range guidance rather than a single dominant outcome.