Trader sentiment for the highest temperature in Buenos Aires on July 29 centers on model consensus projecting daytime maxima of 16–17 °C, driven by persistent high-pressure systems and light variable winds typical of mid-winter in the region. These conditions favor modest solar heating without strong advection from warmer northerly flows or suppressing southerly fronts. An established El Niño pattern adds a slight warmer-than-normal bias across central Argentina, consistent with historical July highs averaging near 15 °C but occasionally reaching 18 °C under clearer skies. Ensemble forecasts show narrow uncertainty bands around these values, with small differences in cloud cover or boundary-layer mixing determining whether the peak edges toward 18 °C or holds at 15 °C; updated model runs from global centers will refine resolution criteria before the close.