Average temperatures, rainfall, sunshine and the best time to visit Rio de Janeiro.
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Pick a month to see the average temperature, rainfall and sunshine in Rio de Janeiro - and find the best time to visit.
With minimal seasonal shifts, Rio de Janeiro experiences a constant climate year-round. Average daytime temperatures reach a very warm 32°C (90°F) in February. In July, the coolest month of the year, temperatures drop to a comfortable 26°C (79°F).
At night, temperatures range from around 24°C (75°F) in February to 18°C (64°F) in July.
Check out our detailed temperature page for more information.
Rio de Janeiro has a notably wet climate with abundant precipitation, recording 1392 mm (55 in) of rainfall per year. Rio de Janeiro can be quite wet during January, receiving approximately 199 mm (7.8 in) of precipitation over 20 rainy days.
In contrast, during the driest month (August), you will experience much drier conditions, with 45 mm (1.8 in) of precipitation spread across 9 rainy days. For more details, please visit our Rio de Janeiro Precipitation page.
Rio de Janeiro experiences moderate variation in sunshine hours across the seasons. With 7.1 hours daily sunshine in January, it dips to 4.8 hours in September, offering a balanced mix of sunny and overcast days.
Visit our detailed sunshine hours page for more information.
The mean water temperature over the year ranges from 21°C (70°F) in August to 26°C (79°F) in February.
The relative humidity is high throughout the year in Rio de Janeiro.
The city experiences its highest humidity in March, reaching 80%. In July, the humidity drops to its lowest level at 77%. What does this mean? Read our detailed page on humidity levels for further details.
The mean wind speed over the year ranges from 2 m/s (4 knots) in April, May, June and July to 4 m/s (8 knots) in November. What does this mean?
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
May, June, July, August and September typically offer the most optimal weather in Rio de Janeiro. In contrast, January and December tend to have less optimal conditions.
Daytime highs range from 26°C (79°F) in July to 32°C (90°F) in February. Nighttime lows range from 18°C (64°F) to 24°C (75°F). Temperatures stay relatively stable year-round.
Annual rainfall is around 1392 mm (55 in). January is the wettest month with 199 mm (7.8 in), while August is the driest with 45 mm (1.8 in).
Rio de Janeiro receives around 2,183 hours of sunshine per year. January is the sunniest month with 212 hours, while September is the cloudiest with just 144 hours. Overall, Rio de Janeiro enjoys abundant sunshine.
Rio de Janeiro is highlighted - select any city to see its climate.
Where to go in October - average daytime high across popular destinations.
Fortaleza
31°C (88°F) Rio de Janeiro
28°C (82°F) Salvador
28°C (82°F) Sao Paulo27°C (81°F) Búzios25°C (77°F) Paraty
25°C (77°F) Gramado24°C (75°F) Florianópolis24°C (75°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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