**Trader consensus clusters tightly around 28–30°C for São Paulo’s maximum temperature on August 8, reflecting model agreement on mild winter conditions with limited warming.** INMET’s official guidance points to a maximum near 33°C under partly cloudy skies with scattered showers, while broader ensemble outputs and recent analogs for early August favor 27–30°C. Key differentiating factors include the precise timing and coverage of afternoon convection, which can cap daytime heating through increased cloud albedo and evaporative cooling; the strength of northerly flow advecting warmer air from the interior; and urban heat-island amplification at the official measurement site. Above-average temperatures are expected across much of Brazil this month, yet short-term variability in boundary-layer moisture and insolation keeps the 28–30°C band competitive. Updated model runs and INMET bulletins through the evening of August 7 will provide the clearest signal ahead of market resolution.