Europe swelters in record heat as Argentina shivers through Antarctic cold snap

As the Northern Hemisphere endures record-breaking heat, Argentina in the Southern Hemisphere is experiencing the opposite — a blast of Antarctic cold air has sent temperatures well below seasonal norms across the country, drawing fresh attention to climate volatility amid simultaneous extremes on either side of the globe.

Argentina's national weather service and local media reported that a cold snap driven by air flowing in from Antarctica has been battering most of the country since July 2.

Temperatures dropped sharply in Buenos Aires and surrounding central regions, with strong winds pushing the wind chill even lower. Residents have been feeling a far more biting cold than is typical for winter.

The cold snap has drawn particular attention because the frigid air spread well beyond the southern regions that normally bear the brunt of harsh winters, reaching deep into the country's central areas.

Argentina spans roughly 2.78 million square kilometers — the eighth-largest country in the world — and stretches far from north to south, producing wide climate variation across its regions. Even within the same winter season, temperatures and weather conditions differ markedly between the south, center and north.

The southern Patagonia region is accustomed to heavy snowfall and bitter cold in winter, while central and northern areas typically experience milder conditions. Meteorological authorities said the broad northward push of Antarctic air seen this time reflects seasonal climate variability.

Buenos Aires normally sees early-July lows around 7 degrees Celsius and highs around 15 degrees — comparable to late autumn in South Korea. But the Antarctic cold snap pushed the wind chill down to zero on July 3, making it the coldest day of the year so far.

On July 2, the coastal cities of Miramar and Mar del Plata in Buenos Aires province received an unusual dusting of snow — a rare occurrence for those central areas.

Weather authorities warned that cold air could continue flowing in for now, issuing yellow and orange alerts by region and urging residents to take special care of their health, protect crops and watch for icy roads.

In the Northern Hemisphere, meanwhile, Europe is gripped by record heat. France, Spain, Italy and Germany have all recorded daytime highs above 40 degrees Celsius, with heat-related casualties reported, wildfire risks elevated and electricity demand surging.

The United States has also been hit hard. A massive heat dome settled over the central and eastern parts of the country starting July 3, pushing the apparent temperature above 40 degrees Celsius in major cities including New York, Philadelphia and Washington, D.C., prompting the government to issue its highest-level heat warnings.

Experts said the simultaneous occurrence of a cold snap in the Southern Hemisphere and a heat wave in the Northern Hemisphere is a natural consequence of the two hemispheres being in opposite seasons. However, they cautioned that sharp temperature swings can raise the risk of cardiovascular and respiratory illness, and urged people to limit outdoor activity and take care of their health.

The back-to-back extreme weather events — heat waves, cold snaps and torrential rains — occurring around the world of late have heightened concern about climate volatility. Experts said the trend that warrants close attention is not the seasons themselves, but the rising frequency and intensity of temperature anomalies that deviate sharply from historical norms.