Ongoing extreme heatwave conditions across South Korea, fueled by persistent high pressure from the North Pacific High and minimal cloud cover, are the dominant driver behind market-implied probabilities favoring 34–36°C as the leading outcomes for Busan’s peak temperature on August 6. Recent observations show record highs exceeding 40°C in nearby inland areas like Yangsan (42.5°C on August 2), with heatwave warnings active in Busan districts, though coastal sea breezes typically moderate maxima relative to surrounding regions. Korea Meteorological Administration guidance and ensemble model consensus indicate sustained hot, humid conditions with limited precipitation through the short term, keeping probabilities for sub-33°C or 37°C+ outcomes lower. Updated short-range forecasts and any model shifts on steering patterns or moisture influx ahead of the August 6 resolution window represent the key near-term catalysts for price movement.