The market's tight clustering around 30–32°C reflects the dominant influence of the southwest monsoon, or habagat, which is expected to maintain partly to mostly cloudy skies with isolated showers and thunderstorms over Metro Manila through August 24. These conditions limit surface heating by reducing incoming solar radiation, keeping daytime maxima near the seasonal average of 30–31°C. Official PAGASA outlooks indicate highs of 30–32°C with 60–90% rain probability, consistent with historical monsoon patterns that suppress extremes above 33°C. Trader sentiment favors the 31°C outcome because model consensus shows only modest variability from persistent cloud cover and humidity, while lower probabilities for 29°C or below align with typical afternoon peaks even under rain. New PAGASA updates and regional model runs remain the key near-term catalysts.