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South America's summer runs from December to February, when the southern hemisphere basks in long, warm days. It's the season for Patagonia's wild peaks, Brazil's beaches and Rio's Carnival — though it's also peak season, so a little planning goes a long way. Here's where to point your compass and what to expect.
Because South America straddles the equator and stretches deep into the far south, one season means very different things depending on where you stand. In the far south — Patagonia, the Lake District and Tierra del Fuego — summer is the golden window: mild temperatures, wildflowers and daylight that lingers well past 9pm.
In the tropics — the Amazon, northern Brazil, Colombia and coastal Ecuador — December to February is warm and humid with regular afternoon downpours. The Andes, meanwhile, sit in their green, wetter season, lush but prone to cloud.
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If Patagonia is on your list, this is the time to go. The famous Torres del Paine in Chile and the trails around El Chaltén in Argentina are at their most walkable, and the notorious wind, while ever-present, is easier to bear in the warmth.
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Brazil comes alive in summer. The beaches of Rio de Janeiro, Florianópolis and the north-east are at their liveliest, and if you time it right you'll catch Carnival (usually February), the most exuberant party on Earth.
Expect heat, crowds and prices to match, especially over New Year when Rio's Copacabana hosts its famous fireworks. Book accommodation early and embrace the festive spirit.
Not everywhere is heaving. The Atacama Desert in northern Chile is glorious year-round and quieter than the south, with warm days and cold, clear nights perfect for stargazing. The Argentine wine country around Mendoza is in full swing with the grape harvest approaching, and the Andes highlands reward those who don't mind a passing shower with emerald landscapes and far fewer visitors.
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Summer is high season in the south, so book internal flights, refugios and marquee experiences months in advance. Pack for contrasts — you may need shorts for Rio and a windproof jacket for Patagonia on the same trip.
Daylight is your friend: with the sun up so long, you can pack more into each day without rushing.
Summer is a wonderful time to see the continent at its most vibrant, but it's also when the logistics are trickiest — permits, peak-season beds and internal flights all need locking in early. Travelling with a small group and a local guide takes that weight off your shoulders, so you arrive to find everything handled and simply enjoy the season at its best. Explore our South America trips and let us help you plan the perfect summer adventure.
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