Recent Korea Meteorological Administration forecasts and the lingering influence of the North Pacific High have positioned 31–33°C as the leading outcomes for Busan’s August 19 high, with market-implied odds favoring 32°C at nearly 40%. Persistent warm, humid air masses have sustained above-average temperatures across southern South Korea amid an active heatwave, though Busan’s coastal location and sea breezes typically moderate extremes relative to inland areas. Short-range models show mostly cloudy conditions with light winds that could cap intensification, while historical August averages near 30°C provide context for the current elevated baseline. Trader consensus reflects these dynamics, with uncertainty tied to any late shifts in cloud cover or precipitation before resolution. Updated KMA guidance over the next 48 hours will likely refine the range.