**Current forecasts from Taiwan's Central Weather Bureau and international models point to an overnight low in Taipei of 25–27°C on August 29, 2026, with trader sentiment tightly split between 25°C and 26°C as the day's minimum.** In Taipei's subtropical climate during late summer, the lowest temperature typically occurs in the pre-dawn hours due to limited radiative cooling under high humidity (often 80%+), light winds, and urban heat island effects from the basin's concrete and buildings that release stored daytime heat. Afternoon or evening showers and thunderstorms—forecast with 30–70% probability—can increase cloud cover, trapping longwave radiation and elevating the minimum by 1–2°C compared to clear conditions. Light southeasterly or variable winds limit mixing with cooler air aloft, while the timing of any rain (often convective and localized) introduces uncertainty in exact cooling rates. Historical climatology for the date shows typical lows near 26°C, but recent model runs reflect modest variability from moisture and cloud feedbacks, keeping the two leading outcomes nearly even as traders weigh the latest observational data and ensemble guidance ahead of overnight readings.