**Persistent summer heat over the Red Sea coast under clear skies and light northwesterly flow is driving trader sentiment toward a narrow cluster around 37–39 °C for Jeddah’s official daily maximum on August 7.** Historical August highs average near 38–40 °C, with recent early-August observations reaching 43–45 °C under strong solar insolation and minimal cloud cover. Coastal moderation from the warm Red Sea surface (typically 30–32 °C) and elevated humidity limit extreme inland-style peaks, yet the same maritime influence sustains high overnight minima that support elevated daytime readings. Short-range model consensus and recent National Center of Meteorology guidance point to continued stable, dry conditions with peak heating in the early afternoon, producing only modest spread among ensemble members. The tight 31 % / 25 % / 17.5 % implied probabilities on 38 °C, 39 °C, and 37 °C reflect this limited variability: small differences in boundary-layer mixing, exact wind timing, or minor convective development can shift the verified maximum by 1–2 °C. Lower-probability tails (≥41 °C or ≤36 °C) remain discounted absent any synoptic change before the observation window closes.