Buenos Aires vs Rio de Janeiro

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Buenos Aires edges ahead as the better destination in April. Buenos Aires offers 9 hours of daily sunshine with only 8 rain days, while Rio de Janeiro sees 10 sunshine hours and 14 rain days.

Buenos Aires sits in the comfortable travel range at 21°C. 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 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Buenos Aires reaches an average high of 21°C (70°F) and drops to 15°C (59°F) at night during April. The daily temperature range is 6°C, meaning relatively stable temperatures from day to night.

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 7°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 104 mm of rainfall across 8 rain days during April. You can expect rain roughly every other day.

Rio de Janeiro sees 103 mm over 14 rain days. That makes Buenos Aires the drier option by 6 rain days and 1 mm of total precipitation.

Humidity also differs: Buenos Aires averages 70% while Rio de Janeiro sits at 78%. Rio de Janeiro will feel muggier, especially at higher temperatures.