The latest spell early this week has become the most intense, pushing the mercury above 100 degrees Fahrenheit, while setting an August record for Chile.
Temperatures Tuesday rose past 95 degrees (35 Celsius) in numerous locations, including at elevations of about 3,500 to 4,500 feet in the Andes foothills.
Parts of Brazil began to bake in mid-July, establishing record highs for the month as temperatures rose to at least 100 degrees (upper 30s Celsius).
There was another spell of unusual heat during the third week of the month, which brought a slew of July records to Argentina, Bolivia, Paraguay and Uruguay.
Weather historian Thierry Goose tweeted that this was an “extraordinary winter heatwave” for Chile as the temperature climbed to 101.7 degrees (38.7 Celsius), a national record for August.