**Persistent monsoon-driven cloud cover, widespread thunderstorms, and high humidity are keeping Manila’s overnight minimum temperatures in the low-to-mid 20s °C on August 29, 2026, with the market-implied consensus centering on 23 °C as the most probable daily low.** Official forecasts from multiple sources (including GFS-based models and agency outlooks) show nighttime lows holding near 25–26 °C under overcast skies and frequent rain, consistent with the climatological August average low of roughly 25–26 °C for the city. The heavy convective activity and southwesterly flow maintain a moist boundary layer that limits radiative cooling after sunset, while the urban heat-island effect and surrounding warm waters further moderate the drop. Traders have therefore assigned the highest probability to 23 °C, viewing it as the realistic floor given current model consensus and the absence of any strong dry-air intrusion that could allow a sharper decline. A modest downside risk remains if localized heavy rainfall or a brief clearing allows additional cooling toward 22 °C, though most guidance keeps the minimum above that threshold. Conversely, any unexpected reduction in cloud cover or lighter winds could hold the low near or slightly above 24 °C, trimming the edge on the 23 °C outcome. Resolution will hinge on the official 24-hour minimum reported by the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) station network.