Uncertainty in short-term numerical weather prediction models for Manila's minimum temperature on August 25 drives the closely matched market-implied odds, with traders balancing potential for elevated nighttime readings near or above 31°C against cooler outcomes at or below 21°C. The southwest monsoon and associated convective patterns over the Philippines can suppress or enhance radiative cooling depending on cloud cover, rainfall timing, and wind shifts, while sea surface temperatures and urban heat island effects in the capital provide a warm baseline. Model ensembles show notable spread in boundary-layer moisture and steering flow over the next 48 hours, typical for late-August conditions where climatological minima average 24–26°C. Updated forecasts from regional meteorological agencies will likely refine probabilities ahead of resolution.