**Trader consensus on the highest temperature in Buenos Aires on August 15 centers on 15–17°C because short-range model guidance and climatology converge on mild winter conditions.** August averages place daytime highs near 15–17°C (59–63°F), with recent observations showing temperatures running slightly above normal but still moderated by persistent cloud cover and light drizzle. Official extended forecasts indicate an overcast day with a high around 15°C, limiting solar heating and keeping readings near seasonal norms rather than pushing toward warmer outliers. Easterly or southeasterly flow off the Atlantic further caps any rapid warming. With resolution tied to the official daily maximum from the Buenos Aires observation network, the tight clustering of probabilities around 15–16°C reflects high model agreement and the absence of strong warm-air advection or clear-sky conditions that could elevate readings into the upper teens.