The active southwest monsoon, or habagat, is the dominant factor shaping trader sentiment, delivering persistent cloud cover, scattered thunderstorms, and moderate to heavy rainfall across Metro Manila through September 11. PAGASA forecasts indicate this will suppress peak heating, with daytime highs most likely in the 29–31°C range amid high humidity and limited solar insolation. Model consensus shows only modest day-to-day variability, creating tight implied probabilities between 30°C and 31°C while assigning lower weight to 32°C or higher. Seasonal baselines near 31°C provide context, yet the ongoing monsoon pattern—without immediate tropical cyclone influence—introduces uncertainty around exact rainfall timing and any brief clearing that could allow brief warming spikes before the next advisory update.