**Trader consensus centers on a 27–29°C peak for Busan on June 16, with 28°C holding the highest implied probability at 37.5%.** This reflects short-range model guidance from the Korea Meteorological Administration and global ensembles showing daytime maxima near 26–28°C under mostly cloudy skies and light southwesterly flow. Coastal sea-breeze moderation from the East Sea consistently caps afternoon heating, keeping values below inland norms despite seasonal warming that has lifted average June highs toward 26°C. Recent AccuWeather and timeanddate extended forecasts align with this range, projecting a 26°C high on the 16th with minimal precipitation risk and moderate humidity. The tight clustering of probabilities around 27–29°C mirrors the narrow uncertainty band in current runs, where small differences in cloud cover or wind strength determine whether the high reaches the upper or lower end of that interval. No anomalous heatwave or blocking pattern is indicated, so outcomes outside 26–30°C remain low-probability tail risks driven by potential model shifts in the final 48 hours.