Current forecasts from multiple models point to an overnight low near 20–21°C for Busan on September 29, with daytime highs around 24–25°C under mostly cloudy skies and a chance of light showers. Easterly to northeasterly winds of 8–13 km/h and elevated humidity are expected to limit overnight radiative cooling, while the city's coastal position further moderates extremes. Recent days have featured similar mild conditions with minima in the 19–22°C range, slightly above long-term September averages. Model-to-model differences in cloud cover and precipitation timing create genuine uncertainty around the precise minimum, keeping market-implied probabilities tightly clustered near 50% across thresholds from 15°C to the mid-20s. Updated runs from agencies such as the Korea Meteorological Administration will likely refine these details ahead of resolution.