Rio de Janeiro vs Sao Paulo

Rio de Janeiro and Sao Paulo are closely matched in October. 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 28°C. Sao Paulo is also comfortable at 25°C.

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

Rio de Janeiro reaches an average high of 28°C (82°F) and drops to 20°C (68°F) at night during October. The daily temperature range is 8°C, meaning moderate variation throughout the day.

Sao Paulo averages 25°C (77°F) for the high and 16°C (61°F) for the low, with a daily range of 9°C. The 3°C difference is noticeable but not dramatic.

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

Rio de Janeiro receives approximately 115 mm of rainfall across 14 rain days during October. You can expect rain roughly every other day.

Sao Paulo sees 110 mm over 14 rain days. Both cities are equally rainy this month.

Both cities share similar humidity levels at 78%.