Recent Korea Meteorological Administration forecasts point to a daytime high near 31–32°C in Busan on May 17, driven by a strengthening high-pressure ridge that favors clear skies and southerly flow across the peninsula. This setup promotes strong daytime solar heating while warm advection from the south elevates temperatures above the seasonal mid-May average of roughly 22–24°C. Model consensus shows minimal spread in the expected peak, though minor variations in cloud cover or wind timing could shift the exact maximum by 1–2°C. Traders have aligned closely with this guidance, pricing 31°C as the modal outcome at 36.1% implied probability and 32°C at 24.5%, reflecting the narrow window before official resolution at the Gimhae station.