The weather in Catalonia in September is hot. The average temperatures are between 20°C and 25°C.
You can expect about 3 to 8 days of rain in Catalonia during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Catalonia in September 2025.
If you’re planning to visit Catalonia in the near future, we highly recommend that you review the 14 day weather forecast for Catalonia before you arrive.