Persistent southwest monsoon (habagat) activity and residual moisture from recent tropical systems like Neneng and approaching Saudel are the main drivers behind Manila’s temperature outlook for August 23. These conditions sustain high humidity and extensive cloud cover, moderating both daytime maxima and nighttime minima by limiting radiative cooling. Official and model guidance from PAGASA-aligned sources and global forecasts consistently point to overnight lows near 24–28 °C, with some runs showing brief dips toward the mid-20s amid scattered showers. Trader emphasis on the 21 °C-or-below bin at 46.5 % implied probability likely reflects uncertainty over exact minimum timing and localized cooling under heavy rain bands, while probabilities clustered around 24–27 °C capture the most probable range under current steering patterns and monsoon strength. Resolution hinges on the official PAGASA or equivalent station reading for the daily minimum.