**Trader sentiment for Jeddah's peak temperature on August 12, 2026, centers on 41°C or higher (47.5% implied probability) and 40°C (31.0%), reflecting expectations of above-normal heat.** The National Center for Meteorology's late-July outlook projected temperatures up to 2.5°C above average across the Makkah region, driven by persistent high-pressure systems and limited cloud cover typical of peak summer in this Red Sea coastal zone. Historical August maxima average 37–38°C, but recent model guidance and seasonal forecasts support potential peaks near or above 41°C under strong solar heating and low wind shear. Coastal humidity moderates perceived conditions yet has minimal impact on official dry-bulb maxima used for resolution. With the day now underway, final readings hinge on afternoon observations; any deviation from current model consensus could shift probabilities toward the 39–40°C range if marine influences or brief cloud build-up intensify.