Weather in Barcelona in September
September in Barcelona is mild with average temperatures around 21.5°C (70.7°F). Moderate rainfall of 59mm spread over 9 days.
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
26.0°C
78.8°F
Low
16.9°C
62.4°F
Precipitation
59 mm
2.3 inches
~9 rainy days
Conditions
Humidity
70%
Comparison to Adjacent Months
September is 3.5°C cooler than August.
September is 3.8°C warmer than October.