Recent forecasts from the Korea Meteorological Administration and other models indicate a daily minimum near 23°C for Busan on August 27, supporting the slight edge for 23°C or below in trader pricing. Key differentiating factors include overnight radiative cooling rates under variable cloud cover, with clearer skies allowing greater heat loss versus overcast conditions that retain warmth, alongside wind speeds that enhance mixing and moderate lows. Coastal marine influences from the East Sea and typical August humidity levels around 70-80% further limit temperature drops, while any strengthening sea breezes or passing frontal systems could push minima higher toward 25-27°C. Model consensus remains tight this close to the date, with traders weighing subtle shifts in ensemble runs for the final resolution.