Forecasts from sources including timeanddate.com and BBC Weather point to a peak near 40–44°C in Jeddah on July 21, driven by typical midsummer radiative heating under mostly clear skies along the Red Sea coast, where high sea-surface temperatures sustain elevated humidity and limit overnight cooling. Trader sentiment clusters around 41–43°C because short-range model runs show only modest day-to-day differences in boundary-layer mixing and northwesterly wind strength; stronger onshore flow or brief cloud cover could cap the maximum near 41°C, while clearer, calmer conditions would allow readings to reach 43°C or higher. Saudi National Center for Meteorology guidance of above-normal summer temperatures provides additional context, though resolution hinges on the precise 24-hour maximum recorded at official stations.