Buenos Aires has a humid subtropical climate, with humid summers and mild winters. The warmest month is January, with a daily average of 25.1 °C (77.2 °F). yet the city is subject to cold fronts that bring short periods of pleasant weather and crisp nights. Relative humidity is 64-70% in the summer, so the heat index is higher than the true air temperature. Spring (September to November and autumn (March to May) are generally mild and volatile, with averages temperatures of around 17 °C (63 °F) and frequent thunderstorms, especially during the spring.

Particularly November, the weather is generally pleasant, with sunny days and fresh nights. However, at this time of year, sporadically cold surges associated with the passage of frontal systems from the south can occur. From the thermal point of view, November is characterized by a mean temperature of 20.3 ° C, average maximum equal to 25.2 ° C and an average minimum of 15.4 ° C.