Recent model consensus from the Korea Meteorological Administration points to a peak temperature near 31°C in Busan on May 17, driven by a strengthening high-pressure ridge and light southerly flow advecting warmer subtropical air. With minimal cloud cover expected and only modest sea-breeze development due to weak pressure gradients, daytime insolation should push maxima into the 30–32°C range. This represents a notable positive anomaly relative to the long-term May average of roughly 23°C. Traders are differentiating outcomes mainly on small timing differences in wind shift and boundary-layer mixing; the 31°C band leads because ensemble guidance clusters there, while 30°C and 32°C remain viable if morning stratus lingers or clears earlier than projected.