Rio de Janeiro vs Sao Paulo

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Sao Paulo edges ahead as the better destination in March. Sao Paulo offers 9 hours of daily sunshine with only 20 rain days, while Rio de Janeiro sees 10 sunshine hours and 21 rain days.

Rio de Janeiro can feel quite hot at 30°C, so plan for heat. Sao Paulo is also comfortable at 26°C.

For travelers who prioritize dry weather, Sao Paulo is the stronger choice in March. 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 30°C (86°F) and drops to 23°C (73°F) at night during March. 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. The 4°C difference is noticeable but not dramatic.

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

Rio de Janeiro receives approximately 210 mm of rainfall across 21 rain days during March. Rain is frequent, so waterproof gear is essential.

Sao Paulo sees 139 mm over 20 rain days. That makes Sao Paulo the drier option by 1 rain day and 71 mm of total precipitation.

Both cities share similar humidity levels at 78%.