Trader sentiment for Taipei’s October 8 overnight low centers on the narrow gap between 21–24 °C outcomes because current model runs and station observations show the city under a strengthening northeast monsoon flow. Persistent easterly winds near 10–15 km/h advect slightly cooler maritime air while increased cloud cover limits nocturnal radiative cooling, keeping the minimum in the low-to-mid 20s rather than allowing deeper drops typical of clearer autumn nights. Historical October climatology places the average low near 22 °C, and today’s partly cloudy to mostly cloudy regime aligns with that baseline; any late-day clearing or wind shift could push readings toward 20–21 °C, while continued moisture and mixing favor the 23–24 °C cluster. Updated Central Weather Administration guidance tonight will resolve the final band.