Buenos Aires Weather Forecast: Rain and Storm Warnings for AMBA

Buenos Aires is facing a period of significant precipitation and unstable weather conditions as of April 15, 2026. Meteorological forecasts indicate heavy rain and the potential for severe weather impacts across the Autonomous City of Buenos Aires and the wider Metropolitan Area of Buenos Aires (AMBA).

According to weather data issued on April 14, 2026, the region is expecting heavy rain with a total of 42mm forecast. The heaviest precipitation is expected to occur during the night of April 15, 2026. Temperatures are expected to remain warm, with a maximum of 22°C recorded on the night of April 14 and a minimum of 16°C projected for the night of April 16, 2026.

Weather Patterns and Forecasts

The current weather system is characterized by a transition toward more volatile conditions. Reports indicate that rains are returning to the AMBA region, while stronger storms are expected in other parts of Argentina. There are also reports of a cyclogenesis advancing toward La Plata and the AMBA area, which is expected to bring both rainfall and strong winds.

Looking beyond the immediate window, the 12-day forecast suggests a fluctuating pattern of precipitation. Between April 19 and April 22, 2026, light rain totaling approximately 5mm is expected, primarily on the morning of April 20. Temperatures during this period are projected to reach a maximum of 24°C on April 19 and a minimum of 12°C on the night of April 20.

A further shift is expected between April 22 and April 25, 2026, with moderate rain totaling 12mm, with the heaviest falls occurring on the night of April 27. Temperatures will be very mild during this interval, with a maximum of 16°C on the afternoon of April 23 and a minimum of 9°C on the morning of April 23.

Long-term Outlook and Potential Risks

The period from April 26 to April 28, 2026, is expected to be mostly dry and very mild, with a maximum temperature of 19°C on the afternoon of April 27 and a minimum of 13°C on the morning of April 25.

However, the forecast indicates a return to severe conditions in the following window. Between April 29 and May 2, 2026, heavy rain totaling 70mm is predicted, with the heaviest precipitation expected during the morning of May 1, 2026. Temperatures during this later period are expected to be warm, reaching a maximum of 23°C on the afternoon of April 28 and a minimum of 13°C on the night of April 29.

The risk of flooding remains a critical concern for the city. Previous reports have highlighted the vulnerability of the infrastructure, noting instances where 130mm of rain within a 24-hour period caused flood chaos in Buenos Aires.

Local weather stations continue to monitor for risks including thunder, high UV indices, and forecast gales. Wind conditions for the immediate period are generally expected to remain light, despite the overarching instability of the atmospheric system.