**Recent official forecasts from meteorological services, including the Met Office and BBC Weather, indicate a daytime high of 17°C for Buenos Aires on August 16, 2026, with some outlooks extending to 18°C under moderate northerly winds and increasing cloud cover.** This aligns closely with long-term August climatology, where average highs range from 15–18°C (roughly 59–64°F) due to the city's subtropical location and typical wintertime Atlantic influences. Trader consensus heavily favors 18°C at 55.5% implied probability because ensemble models often show a modest upside bias of 1°C from forecast central tendencies, especially with potential for brief warming periods before any frontal passage. Lower outcomes like 17°C (19%) or 19°C (17.5%) reflect residual model spread and observational uncertainty typical for same-day resolution, while extremes remain discounted given stable seasonal patterns and absence of anomalous heat advection or clear-sky radiative warming. Upcoming official updates from local agencies will likely refine the exact peak reading.