**Trader consensus at 100% implied probability for a 25°C high in Cape Town on September 13, 2026, reflects real-time surface observations and model guidance from sources such as the South African Weather Service and international ensembles showing a daytime peak near that threshold amid variable cloud cover, scattered thunderstorms, and northerly winds.** Afternoon readings from multiple stations clustered around 21–22°C earlier in the day before localized warming pushed values to the market-implied level, consistent with September climatology where highs typically range 18–23°C but can spike under brief clear spells. This outcome aligns with verified station maxima rather than longer-range projections. A realistic challenge would require post-event data revisions from official networks or discrepancies between airport and urban sensors exceeding the 1°C resolution band, though current monitoring indicates low likelihood of such adjustments before final reporting.