Singapore’s National Environment Agency outlook for the first half of August 2026 points to drier southwest monsoon conditions and reduced rainfall, supporting daytime maxima of 33–34 °C on most days amid a developing El Niño and positive Indian Ocean Dipole. These factors suppress cloud cover and allow stronger solar heating, pushing afternoon peaks above the long-term August average of 31 °C. Recent observations through early August show highs near 32 °C under partly cloudy skies with isolated thunderstorms, consistent with model consensus for August 12. Traders therefore assign the highest implied probabilities to 32 °C and 33 °C, while the low odds for 34 °C or higher reflect the narrow historical window for exceeding NEA’s upper guidance before any late-day convective cooling occurs.