Average Temperature in Rio de Janeiro by Month

Rio de Janeiro has a tropical monsoon climate, classified as Am in the Köppen system. The warmest month is January with an average high of 31°C, while the coldest month is July with lows dropping to 17°C. The annual temperature range of 14°C indicates a relatively stable climate year-round.

The driest month is July with only 7 rain days and 49mm of precipitation. For travellers, July through to the following month typically offers the best balance of warm temperatures and dry conditions. Average humidity ranges from 78% to 78% throughout the year.