🇦🇷 Buenos Aires vs Rio de Janeiro 🇧🇷
Buenos Aires, Argentina vs Rio de Janeiro, Brazil — a side-by-side climate comparison to help you pick. Rio de Janeiro is the warmer of the two — about 4 degrees warmer on average across the year. Buenos Aires is drier, with roughly 45 fewer rainy days a year.
Climate at a glance
| 🇦🇷 Buenos Aires | 🇧🇷 Rio de Janeiro | |
|---|---|---|
| Avg annual high | 23°C | 27°C |
| Hottest month | January (30°C) | January (30°C) |
| Coldest month | July (7°C low) | July (18°C low) |
| Rainy days / year | 85 | 130 |
| Snow | Rare | Rare |
| Best months to visit | April, May, October | June, July, August |
🇦🇷 Buenos Aires
Best around April, May, October. Hottest in January (30°C), coldest lows in July (7°C).
🇧🇷 Rio de Janeiro
Best around June, July, August. Hottest in January (30°C), coldest lows in July (18°C).
Frequently asked questions
Is Buenos Aires or Rio de Janeiro warmer?
Rio de Janeiro is warmer overall, averaging about 4 degrees higher across the year.
Which is rainier, Buenos Aires or Rio de Janeiro?
Rio de Janeiro is rainier — Buenos Aires sees about 45 fewer rainy days per year.
When is the best time to visit Buenos Aires vs Rio de Janeiro?
Buenos Aires is best around April, May, October; Rio de Janeiro is best around June, July, August.