**Persistent influence from the North Pacific subtropical high is sustaining hot, mostly sunny conditions across southern South Korea, with Busan positioned for peak daytime heating on August 24 under light southwesterly flow and minimal cloud cover.** This setup favors strong solar insolation and modest warm-air advection, pushing maximum temperatures into the mid-30s °C range at official stations, though coastal sea breezes and urban heat-island effects can create 1–2 °C local variability. Recent model guidance and observed trends show highs near 29–32 °C in many runs, yet the lingering heat wave—following earlier August peaks near 38 °C—supports trader weighting toward 35 °C (36.5 % implied probability) over 34 °C (29.0 %) or 36 °C (19.5 %). Small differences among these outcomes hinge on exact timing of any weak sea-breeze onset, minor model disagreements in boundary-layer mixing, and whether afternoon humidity or thin high clouds trim the peak by a degree or two. With resolution two days away and no major synoptic shift (such as Typhoon Saudel interaction) expected before the 24th, the closely matched leading probabilities reflect genuine uncertainty in the final observed maximum rather than a dominant catalyst.