**Forecast models from the Korea Meteorological Administration and international sources converge on daytime highs of 29–31°C for Busan on August 29, 2026, amid a stationary front bringing scattered thunderstorms and high humidity.** This positions 31–33°C as the most probable range for the official peak, consistent with the market’s heavy weighting toward 32°C (44.5%) and 31°C (26.0%). Persistent moisture and cloud cover from the front limit strong solar heating, while southwesterly flow and urban heat retention in coastal Busan can produce brief spikes near the daily maximum. Recent model runs show little day-to-day shift, with only modest uncertainty around exact timing of any clearing or convective cells that could briefly push readings to 33°C or hold them at 30°C. Historical late-August climatology (averages near 29–30°C) supports the tight clustering, and the absence of major model disagreement keeps probabilities anchored in this narrow band ahead of final observations.