**Persistent southwest monsoon (Habagat) activity over Luzon continues to shape conditions for Manila on August 30, 2026.** This drives frequent cloud cover, scattered to occasional rains, and moderate to strong southwesterly winds, which limit daytime heating while suppressing nighttime radiative cooling through high humidity and insulation from clouds. Official forecasts from PAGASA and international models (e.g., Met Office, Yr) indicate typical August diurnal ranges of roughly 4–6°C, with overnight lows most often projected in the 24–26°C range at stations like Ninoy Aquino International Airport or Science Garden. Historical climatology reinforces this: August average minimums sit near 24–26°C amid peak rainy-season moisture (hundreds of mm monthly totals), and recent observations show recorded mins of 25–26°C under similar monsoon flow. The closely bunched market probabilities around 24–26°C reflect trader consensus on these stable, high-humidity conditions without major disruptions like a passing tropical cyclone or clear-sky radiative cooling event. Key variables that could shift the exact low include forecast refinements to cloud thickness or wind speed from updated PAGASA or global model runs, as heavier rain or stronger mixing would favor the lower end of the range while any brief clearing would push toward 27°C or above.