Rio de Janeiro vs Sao Paulo

Rio de Janeiro and Sao Paulo are closely matched in May. 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.

Rio de Janeiro sits in the comfortable travel range at 26°C. Sao Paulo is also comfortable at 22°C.

For travelers who prioritize dry weather, Sao Paulo is the stronger choice in May. Rio de Janeiro receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Rio de Janeiro reaches an average high of 26°C (79°F) and drops to 19°C (66°F) at night during May. The daily temperature range is 7°C, meaning relatively stable temperatures from day to night.

Sao Paulo averages 22°C (72°F) for the high and 14°C (57°F) for the low, with a daily range of 8°C. The 4°C difference is noticeable but not dramatic.

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

Rio de Janeiro receives approximately 76 mm of rainfall across 11 rain days during May. You can expect rain roughly every other day.

Sao Paulo sees 59 mm over 8 rain days. That makes Sao Paulo the drier option by 3 rain days and 17 mm of total precipitation.

Both cities share similar humidity levels at 78%.