Best Places to Visit in South America in December 2026

South America in December ranges from about 10°C (Puerto Natales) to 31°C (Manaus). Median around 22°C. The exact temperature depends heavily on which destination — coastal vs inland, north vs south, altitude all matter.

Puerto Natales, Chile averages around 10°C in December — the coolest destination in South America on our list. Worth checking peak/shoulder season too: even with cool temps, December may not be peak for the destination.

Manaus, Brazil runs around 31°C in December — the warmest destination in South America on our list. If you're chasing summer in winter or beach weather year-round, this is the move.

Across South America we have 40 destinations with weather data. Whether December is "good" depends on what you're after: cool weather, warm weather, peak season pricing or shoulder. The list below sorts by temperature so you can match destinations to your weather preference.