Traders favor 32°C or 33°C for Panama City’s peak temperature on August 21 because official forecasts, including the UK Met Office projection of a 31°C maximum, sit near the boundary between these bins amid typical rainy-season variability. Afternoon convection driven by the Intertropical Convergence Zone often produces variable cloud cover and brief showers that can either suppress or allow brief surface heating to 32–34°C, depending on timing and insolation. Historical August averages near 29–30°C with occasional peaks above 32°C, combined with current model consensus on light winds and high humidity, create narrow uncertainty around these thresholds. New observational data or updated regional model runs the morning of the 21st will likely refine the outcome before resolution.