Rio de Janeiro vs Sao Paulo

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.

Rio de Janeiro can feel quite hot at 31°C, so plan for heat. Sao Paulo is also comfortable at 26°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.

Rio de Janeiro reaches an average high of 31°C (88°F) and drops to 24°C (75°F) at night during January. The daily temperature range is 7°C, meaning relatively stable temperatures from day to night.

Sao Paulo averages 26°C (79°F) for the high and 19°C (66°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.

Rio de Janeiro receives approximately 253 mm of rainfall across 20 rain days during January. Rain is frequent, so waterproof gear is essential.

Sao Paulo sees 227 mm over 23 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%.