Weather in Lisbon in August
August in Lisbon is mild with average temperatures around 20.7°C (69.3°F). Light rainfall with only 6mm 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
23.3°C
73.9°F
Low
18.2°C
64.8°F
Precipitation
6 mm
0.2 inches
~1 rainy days
Conditions
Humidity
81%