Buenos Aires vs Rio de Janeiro

Buenos Aires and Rio de Janeiro are closely matched in April. Neither city has a clear advantage across all metrics. Your decision should come down to personal preference, cultural interests, and travel logistics rather than weather alone.

Buenos Aires is on the cooler side at 11°C, requiring warmer clothing. Rio de Janeiro is also comfortable at 28°C.

For travelers who prioritize dry weather, Buenos Aires is the stronger choice in April. Rio de Janeiro receives 8 more hours of sunshine per day, which matters for sightseeing and outdoor activities.

Buenos Aires reaches an average high of 11°C (52°F) and drops to 3°C (37°F) at night during April. The daily temperature range is 8°C, meaning moderate variation throughout the day.

Rio de Janeiro averages 28°C (82°F) for the high and 22°C (72°F) for the low, with a daily range of 6°C. There is a notable 17°C gap between the two cities, so expect a very different feel.

Both cities are in the Southern Hemisphere, so they share the same seasonal pattern in April.

Buenos Aires receives approximately 40 mm of rainfall across 3 rain days during April. Rain is occasional, so a light rain jacket should suffice.

Rio de Janeiro sees 103 mm over 14 rain days. That makes Buenos Aires the drier option by 11 rain days and 63 mm of total precipitation.

Humidity also differs: Buenos Aires averages 65% while Rio de Janeiro sits at 78%. Rio de Janeiro will feel muggier, especially at higher temperatures.