Month guide · Barcelona, Spain
Barcelona in September: weather and what to expect
September is the wettest month of the year in Barcelona. September highs in Barcelona are now 1.1°C warmer than in 1991-2000. In September, Barcelona averages highs of 24°C and lows of 18°C, with about 12 rainy days and 85 mm of rain. Crowds in Catalonia are medium.
Is September a good time to visit?
Good for
No verdicts for Barcelona in September yet. They only use climate values that are precise enough to judge with.
Not ideal for
- Reliable dry weatherAbout 12 rainy days in the month
Daily highs through September
Town-level · ERA5-Land 1991-2020Highs fall about 3°C over the month.
September in detail
Town-level · ERA5-LandCrowds, holidays and daylight
Public holidays in September 2027
- 11 Sep National Day of CataloniaCatalonia
Local (municipal) holidays are not included.
Warmer in September
Where is warm in September →| Place | High | Rain days | From Barcelona |
|---|---|---|---|
| Santomera, Murcia | 30°C | 5 | 461 km |
| Cobatillas, Murcia | 30°C | 5 | 462 km |
| Benferri, Valencian Community | 30°C | 5 | 449 km |
| Ceutí, Murcia | 30°C | 5 | 471 km |
| Alguazas, Murcia | 30°C | 5 | 472 km |
The nearest towns with a warmer September. Distances are in a straight line.
How September is changing
Town-level · ERA5-LandSeptember highs are 1.1°C warmer than in 1991-2000, and September rainfall is about the same (2016-2025 against 1991-2000).
Questions about Barcelona in September
Is September a good time to visit Barcelona?
It is less suited to reliable dry weather (about 12 rainy days in the month).
How warm is Barcelona in September?
Average highs are 24°C and lows 18°C. August averages 28°C and October 21°C.
Does it rain much in Barcelona in September?
About 12 days have at least 1 mm of rain, with 85 mm in total over the month.
Is Barcelona busy in September?
In September 2025, nights booked through online platforms in Catalonia were about 50% of the busiest month, which we count as medium. The figure is for the whole region and leaves out hotels.
How long are the days in Barcelona in September?
About 12 h 33 min from sunrise to sunset in the middle of the month.
Sources
Climate: ERA5-Land, Copernicus Climate Change Service (C3S) Climate Data Store, contains modified Copernicus information (CC BY 4.0). Crowds: Eurostat, nights spent in short-stay accommodation booked through online platforms (tour_ce_omn12) (CC BY 4.0). Place names and populations: GeoNames (CC BY 4.0). Climate averages cover 1991-2020. Daylight: calculated from the town's coordinates. Full methodology