Recent forecasts for Busan on September 1, 2026, from multiple sources indicate a daytime high near 28–29 °C with a minimum temperature most likely in the 24–26 °C range, driven by partly cloudy skies, light southerly winds, and a 25–40 % chance of scattered showers or thunderstorms. These conditions favor modest overnight radiative cooling while limiting sharp drops, as cloud cover and humidity trap heat. Late-August patterns of elevated temperatures (highs often above 30 °C) are moderating with the seasonal shift, though model runs show minor divergence on exact wind shifts and rainfall timing that could nudge the low by 1–2 °C. Market-implied odds clustered tightly around 22–28 °C reflect this near-term forecast uncertainty, with lower probabilities assigned to outliers below 21 °C or 29 °C or higher given the absence of strong frontal systems or clear-sky radiative setups. Updated model guidance and any overnight observations in the final 48 hours will be the key variables traders monitor before resolution.