Sao Paulo vs Rio de Janeiro

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Sao Paulo edges ahead as the better destination in December. Sao Paulo offers 10 hours of daily sunshine with only 20 rain days, while Rio de Janeiro sees 10 sunshine hours and 20 rain days.

Sao Paulo sits in the comfortable travel range at 26°C. Rio de Janeiro runs hot at 30°C.

For travelers who prioritize dry weather, both cities are equally dry in December.

Sao Paulo reaches an average high of 26°C (79°F) and drops to 18°C (64°F) at night during December. The daily temperature range is 8°C, meaning moderate variation throughout the day.

Rio de Janeiro averages 30°C (86°F) for the high and 23°C (73°F) for the low, with a daily range of 7°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 December.

Sao Paulo receives approximately 168 mm of rainfall across 20 rain days during December. Rain is frequent, so waterproof gear is essential.

Rio de Janeiro sees 226 mm over 20 rain days. Both cities are equally rainy this month.

Both cities share similar humidity levels at 78%.