Recent forecasts from global and regional models indicate Jeddah will likely reach a daily maximum near or above 37°C on May 17, reflecting the strong market-implied probability for that outcome. In this arid subtropical setting, May marks the transition toward peak summer conditions driven by persistent high pressure, minimal cloud cover, and warm Red Sea surface waters that suppress overnight cooling and sustain daytime heat. Historical data show average May highs around 37°C, with recent observations confirming temperatures climbing to 40–41°C in early May amid stable atmospheric patterns. Any slight downward revisions in model runs could still keep readings at or above 36°C, while stronger onshore flow or minor dust events remain the primary variables that might moderate the peak.