About this Market

Current forecast models for Singapore on September 30 project a daily maximum near 30–32°C, with partly cloudy skies, scattered thunderstorms, and easterly winds limiting peak heating through reduced solar insolation and evaporative cooling. This aligns with the historical September mean daily maximum of 31.6°C at Changi and recent observations showing elevated but not extreme values amid regional haze influences from Sumatra. Model consensus across sources emphasizes thunderstorm probability above 60%, which typically caps afternoon temperatures below seasonal outliers. Trader positioning, with 32°C holding the highest implied probability at 46.5%, reflects this near-normal outlook, while lower odds on 33°C or above account for uncertainty in convective timing and any clearer intervals that could allow brief warming. Updated model runs closer to the date will refine these thresholds.