Recent forecast models from agencies tracking the western Pacific monsoon indicate a highest temperature in Taipei on September 2 most likely between 29–33°C, driven by persistent easterly flow, high humidity near 75–85%, and 60–90% probability of showers or thunderstorms that reduce solar insolation and cap afternoon peaks. These conditions align with September climatology, where mean daily maxima average 30–32°C amid frequent convective activity, though brief clearing could allow brief spikes toward 34–35°C if instability decreases. Trader consensus reflected in the market-implied odds places the highest probability on 34°C, consistent with slight model spread favoring marginally warmer outcomes than the wetter baseline runs. Updated guidance expected from regional meteorological centers in the next 24 hours could refine land-sea breeze and precipitation timing ahead of resolution.