Forecast models show a relatively narrow spread for São Paulo’s maximum temperature on August 30, with most guidance clustering between 29–33 °C. Key variables include northwest winds that have supported recent warming, modest afternoon cloud cover, and a low-probability chance of scattered showers that could limit peak heating. Official agencies such as the Met Office and regional models indicate surface highs near 29–31 °C under partly cloudy skies, while some higher-resolution runs allow brief clearing that could push readings to 32–33 °C. Historical late-August maxima average around 22–25 °C, so current warmth reflects a transient ridge rather than a sustained pattern. Traders therefore assign the highest implied probabilities to 30–32 °C, reflecting both the central forecast envelope and residual uncertainty in boundary-layer mixing and convective timing before resolution.