Central Chile, including Santiago, experiences a pleasant Mediterranean climate, while the southern regions begin to feel the cooler breezes of the Southern Ocean. Amazon Basin and Northern Tropics For destinations like Brazil, Colombia, Ecuador, and Peru, December is firmly within the wet season.
South America December Weather Activity Planner: What to Expect and How to Prepare
Region Typical Temperature Conditions Amazon Rainforest 25°C to 32°C (77°F to 90°F) Hot, humid, frequent rain showers Rio de Janeiro, Brazil 26°C to 32°C (79°F to 90°F) Sunny, humid, occasional showers Buenos Aires, Argentina 20°C to 30°C (68°F to 86°F) Warm, sunny, vibrant city energy Patagonia, Chile 10°C to 20°C (50°F to 68°F) Festivals and Cultural Weather. This is the prime season for beach holidays and urban exploration in these areas.
Travelers from across the globe are drawn to the diverse climates, from the electric energy of Carnival in Rio de Janeiro to the serene beaches of Uruguay and the dramatic fjords of Chilean Patagonia. Expect high humidity, frequent afternoon showers, and temperatures consistently hovering around 30°C (86°F).
South America December Weather Activity Planner: What to Pack and Expect
While the Northern Hemisphere shivers through winter, this region basks in long, languid days perfect for exploration. In Peru, the ancient city of Machu Picchu is often shrouded in mist, with frequent rain creating an atmosphere of mystery but requiring sturdy footwear.
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