Catalonia weather in September
September is one of the best months to visit Catalonia: highs of 26°C (78°F) and about 59 mm (2.3 in) of rain on average. Nights average 16°C (62°F) and cloud cover 56% (NASA POWER, 2001–2025 averages). The sea averages 26°C (78°F). It is the 2nd wettest month of the year and the 4th warmest. Compared with August, it is cooler and wetter; October brings highs of 21°C (71°F) and 70 mm (2.8 in) of rain.
Figures are long-term averages for Barcelona, the largest city in Catalonia. See below for other places.
Is September a good time to visit Catalonia?
best month Weather score 79/100.
Yes. September is one of the best months for weather in Catalonia.
Does it rain a lot in Catalonia in September?
No, it is usually dry: about 59 mm (2.3 in) falls in an average September. It is the 2nd wettest month of the year.
How warm is Catalonia in September?
Days average 26°C (78°F) and nights 16°C (62°F).
Catalonia weather by month
| Month | High | Low | Rain | Cloud | Sea | Weather |
|---|---|---|---|---|---|---|
| January | 12°C (53°F) | 3°C (37°F) | 34 mm | 69% | 14°C (57°F) | least pleasant |
| February | 13°C (55°F) | 3°C (38°F) | 32 mm | 66% | 14°C (57°F) | least pleasant |
| March | 16°C (61°F) | 6°C (42°F) | 43 mm | 63% | 14°C (57°F) | fair |
| April | 19°C (66°F) | 9°C (47°F) | 50 mm | 62% | 16°C (60°F) | fair |
| May | 23°C (73°F) | 12°C (54°F) | 49 mm | 58% | 19°C (65°F) | best |
| June | 27°C (81°F) | 17°C (62°F) | 27 mm | 47% | 23°C (73°F) | best |
| July | 30°C (86°F) | 20°C (67°F) | 28 mm | 38% | 26°C (79°F) | best |
| August | 30°C (85°F) | 20°C (67°F) | 41 mm | 44% | 27°C (81°F) | best |
| September | 26°C (78°F) | 16°C (62°F) | 59 mm | 56% | 26°C (78°F) | best |
| October | 21°C (71°F) | 13°C (55°F) | 70 mm | 65% | 22°C (72°F) | fair |
| November | 16°C (61°F) | 7°C (45°F) | 54 mm | 68% | 19°C (66°F) | least pleasant |
| December | 12°C (54°F) | 4°C (39°F) | 31 mm | 68% | 16°C (60°F) | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated . How we rate months
Weather across Catalonia in September
Weather can differ a lot within Catalonia: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Barcelona | 26°C (78°F) | 16°C (62°F) | 59 mm | best |
| Eixample | 26°C (78°F) | 16°C (62°F) | 59 mm | best |
| L'Hospitalet de Llobregat | 26°C (78°F) | 16°C (62°F) | 59 mm | best |
| Sant Martí | 24°C (76°F) | 19°C (66°F) | 76 mm | fair |
| Terrassa | 26°C (78°F) | 16°C (62°F) | 59 mm | best |
| Badalona | 24°C (76°F) | 19°C (66°F) | 76 mm | fair |
| Sabadell | 26°C (78°F) | 16°C (62°F) | 59 mm | best |
| Sants-Montjuïc | 26°C (78°F) | 16°C (62°F) | 59 mm | best |
| Horta-Guinardó | 26°C (78°F) | 16°C (62°F) | 59 mm | best |
| Nou Barris | 26°C (78°F) | 16°C (62°F) | 59 mm | best |
| Sarrià-Sant Gervasi | 26°C (78°F) | 16°C (62°F) | 59 mm | best |
| Sant Andreu | 24°C (76°F) | 19°C (66°F) | 76 mm | fair |