**Trader consensus centers on 33°C as the leading outcome for Manila’s highest temperature on October 1, reflecting El Niño-driven warmth superimposed on the typical early-October transition toward drier conditions.** Historical October daytime maxima in Manila average 31–32°C, with occasional peaks near 34–36°C during reduced rainfall periods. PAGASA’s September 2026 climate outlook highlights a strengthening El Niño in the tropical Pacific—projected to reach strong or very strong intensity by late 2026—favoring above-average temperatures and below-normal rainfall across much of the country through October. This large-scale signal supports slightly elevated maxima by limiting cloud cover and enhancing solar heating. Short-term model guidance and recent surface observations around late September show daytime highs near 32–33°C under partly cloudy skies with isolated thunderstorms, consistent with the market’s distribution that assigns the highest implied probability to 33°C while spreading smaller chances across 32°C and 34–35°C. Updated PAGASA forecasts and ensemble model runs over the coming days will be the primary near-term catalysts for any shifts in these probabilities.