Weather in Rio de Janeiro in August
August in Rio de Janeiro is mild with average temperatures around 21.8°C (71.2°F). Light rainfall with only 42mm expected.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
25.2°C
77.4°F
Low
18.4°C
65.1°F
Precipitation
42 mm
1.6 inches
~7 rainy days
Conditions
Humidity
77%
Comparison to Adjacent Months
August is 27mm drier than September.