Recent Korea Meteorological Administration forecasts for Busan on August 20 project a daytime maximum of 33°C under partly cloudy skies with 30% morning precipitation odds, aligning with the market’s near-tie between 33°C and 32°C outcomes. Late-summer conditions feature high humidity, modest sea-surface temperatures in the Korea Strait that moderate coastal heating, and variable cloud cover that can suppress peak readings by 1–2°C. Historical August averages near 30–31°C provide baseline context, while short-term model runs show sensitivity to exact timing of any showers or breaks in cloudiness. Updated KMA guidance and ensemble consensus expected within 24–48 hours will likely resolve the narrow spread between these adjacent thresholds.