Current forecasts from multiple models indicate mostly clear skies and light variable winds over Busan on September 13, supporting overnight radiative cooling after daytime highs near 28–29°C. Coastal moderation from the East Sea and moderate humidity levels typically limit the daily minimum to the low 20s°C, consistent with September climatology. Trader sentiment remains dispersed across bins because small differences in cloud cover timing, wind speed, or local urban heat effects can shift the exact low by several degrees, while official Korea Meteorological Administration observations will determine resolution. Updated model runs and evening soundings represent the next key data points likely to refine implied probabilities.