**Official forecasts from Singapore’s Meteorological Service (MSS) and prevailing El Niño conditions are the main drivers behind the market’s heavy weighting toward a 33–34 °C high on 5 October.** The agency’s early-October outlook calls for fair, warm weather under continuing southwest monsoon flow, with daily maxima most often 34–35 °C and the possibility of slight exceedances on isolated days. A strong “Godzilla” El Niño has suppressed rainfall and elevated temperatures across the region, extending drier conditions into the first half of the month and pushing recent readings above the long-term October average of ~31–32 °C. Short-range model guidance for the specific date shows a narrower range around 31–33 °C, tempered by variable cloud cover and afternoon convection, but the broader seasonal signal keeps 33 °C as the clear plurality outcome. Updated MSS guidance and final official observations on 5 October will determine resolution.