Sao Paulo vs Rio de Janeiro

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Rio de Janeiro edges ahead as the better destination in January. Rio de Janeiro offers 10 hours of daily sunshine with only 20 rain days, while Sao Paulo sees 9 sunshine hours and 23 rain days.

Sao Paulo sits in the comfortable travel range at 26°C. Rio de Janeiro runs hot at 31°C.

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

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

Rio de Janeiro averages 31°C (88°F) for the high and 24°C (75°F) for the low, with a daily range of 7°C. There is a notable 5°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 January.

Sao Paulo receives approximately 227 mm of rainfall across 23 rain days during January. Rain is frequent, so waterproof gear is essential.

Rio de Janeiro sees 253 mm over 20 rain days. That makes Rio de Janeiro the drier option by 3 rain days and 26 mm of total precipitation.

Both cities share similar humidity levels at 78%.