A polar air mass originating from Antarctica brought record low temperatures to Argentina, Chile and Uruguay between June 30 and July 3, 2024, causing at least 15 deaths and prompting emergency shelter activation and gas supply restrictions across the region.
Torrential rains struck northern Buenos Aires Province, Argentina, between May 16 and 18, 2025, forcing over 4 100 people to evacuate and leaving several others missing. The storms brought more than 400 mm (16 inches) of rainfall, flooding towns, closing major highways, and disrupting the regional soybean harvest.
Argentina has declared three days of mourning after extreme rainfall and severe flooding resulted in the deaths of 16 people and 2 children missing in the coastal city of Bahía Blanca, Buenos Aires Province, on March 7, 2025.
Record-breaking rainfall hit Bahía Blanca, Buenos Aires Province, on March 7, 2025, causing severe floods in which at least 10 people lost their lives.
A severe storm brought over 270 mm (10.6 inches) of rain in just 4 hours over Bahía Blanca, Buenos Aires Province, on March 7, 2025, triggering widespread flooding and evacuations.
Severe thunderstorms hit parts of Argentina, Uruguay and southern Brazil’s Rio Grande do Sul on Sunday, December 1, 2024, bringing strong winds, heavy rain and large hail. The worst affected was Rio Grande do Sul where about 3 million people were left without power.
As a polar wave continues to affect Argentina, the city of Gualeguaychú hit a record-breaking low temperature of -7.6 °C (18.3 °F) on July 9, 2024. Meanwhile, all provinces of Argentina recorded temperatures below 0 °C (32 °F) on July 10, 2024. The severe cold snap prompted authorities to issue numerous Red, Orange, and Yellow alerts for extreme cold.
A severe cold snap has been affecting most of Argentina, including the capital Buenos Aires, since Saturday, July 6, 2024, with Patagonia becoming one of the coldest regions of the world. Argentina’s National Meteorological Service issued an Orange alert for regions surrounding the county’s capital and Yellow alerts for most other provinces.
Chile’s capital, Santiago, has been experiencing record-low temperatures for several days, with minimum temperatures around 0 °C (32 °F). This cold spell has made May 2024 the coldest May since 1950, according to the Chilean meteorological agency. In some coastal regions and parts of Santiago, temperatures have dipped below freezing, a rare occurrence for this time of year.
Argentina’s famed wine region, Mendoza, was hit by an intense storm on January 11, 2024, with large hailstones and heavy rainfall. Local authorities are assessing the impact on the vineyards, with concerns over the size of the hail and subsequent flooding.
