01Weather
Barcelona weather in September
Afternoons in September average 26.8 °C (80 °F) and nights cool to 19.2 °C (67 °F). The month brings about 64 mm (2.5 in) of rain spread over roughly 6 days. Compared with August it is 3.2 °C cooler; October is 3.5 °C cooler again.
What the averages hide
| In a typical September | Value | What it means |
|---|---|---|
| Warm afternoons (90th percentile) | 29 °C / 85 °F | one day in ten is at least this warm |
| Cool afternoons (10th percentile) | 24 °C / 75 °F | one day in ten stays below this |
| Cold nights (10th percentile) | 16 °C / 60 °F | one night in ten is colder than this |
| Days above 30 °C (86 °F) | 1.5 | per month, average 2016–2025 |
| Nights at or below 0 °C (32 °F) | 0.0 | frost mornings per month |
| Chance of rain on any given day | 18 % | at least 1 mm |
| Hottest / coldest September day 2016–2025 | 32.8 °C / 12.0 °C | extremes in the ten-year record |
02Daylight
Sunrise, sunset and the length of the day
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 1 September | 07:17 | 20:24 | 13.1 h |
| 15 September | 07:31 | 20:01 | 12.5 h |
| 30 September | 07:47 | 19:35 | 11.8 h |
Daylight shrinks by about 78 minutes over the month. Times are local (Europe/Madrid).
03Crowds
How busy Barcelona is in September
busy The main sights are busy in September. What drives it:
- La Mercè on 24 September
- Diada on 11 September
- warm sea
04Public holidays
Public holidays in September 2027
| Date | Holiday |
|---|---|
| 11 Sep 2027 | National Day of Catalonia |
On public holidays many shops close and museums run on Sunday hours; check opening times for the day before and after as well.
05Events
What's on in Barcelona in September
Every year in September
| Event | When | Type |
|---|---|---|
| La Diada | 11 September, Catalan national day | national |
| La Mercè | around 24 September, city festival with castells and correfoc | festival |
07Packing
What to pack for Barcelona in September
- light, breathable clothing
- sun hat and sunscreen
- refillable water bottle
- a compact umbrella for occasional showers
08Editor's notes
What the numbers don't tell you
September keeps the summer warmth with afternoons around 26 °C and the sea at its warmest, while La Mercè in the last week gives the city its biggest festival, with human towers, fire runs, giants and free concerts, and 24 September a holiday. The Diada on 11 September is the Catalan national day, with demonstrations and a holiday. Rates ease after the first week.
Rain returns in short heavy bursts, about five days. The beach season continues to the end of the month. Schools return in the second week, so the family crowds thin. The Sagrada Família still needs booking a week ahead. For the mild month with the last beach days and lower prices, see October; the days between the Diada and La Mercè are the quiet window.
09Compare
Barcelona month by month
| Month | High | Low | Rain days | Sun h | Crowds | Verdict |
|---|---|---|---|---|---|---|
| January | 15 °C | 6 °C | 4 | – | quiet | Good |
| February | 16 °C | 8 °C | 4 | – | quiet | Good |
| March | 17 °C | 9 °C | 4 | – | moderate | Good |
| April | 19 °C | 11 °C | 6 | – | busy | Excellent |
| May | 22 °C | 15 °C | 4 | – | busy | Excellent |
| June | 27 °C | 20 °C | 3 | – | very busy | Good |
| July | 29 °C | 22 °C | 2 | – | very busy | Good |
| August | 30 °C | 23 °C | 4 | – | very busy | Mixed |
| September | 27 °C | 19 °C | 6 | – | busy | Excellent |
| October | 23 °C | 16 °C | 6 | – | busy | Excellent |
| November | 19 °C | 10 °C | 5 | – | moderate | Excellent |
| December | 16 °C | 7 °C | 3 | – | moderate | Good |
Not sure about September? See the best time to visit Barcelona.
10Elsewhere
September in nearby cities
| City | High | Rain days |
|---|---|---|
| Paris in September | 22 °C | 10 |
| Rome in September | 28 °C | 6 |
| Venice in September | 24 °C | 7 |
| Lisbon in September | 27 °C | 4 |
| London in September | 19 °C | 7 |
| Amsterdam in September | 20 °C | 10 |
11FAQ
Barcelona in September: your questions
Is September a good time to visit Barcelona?
September is one of the best months to visit Barcelona. Daytime highs average 27 °C (80 °F), rain falls on about 6 days, and hotel arrivals run above the yearly average, so the main sights are busy.
What is the weather like in Barcelona in September?
Expect warm days around 27 °C (80 °F) and nights near 19 °C (67 °F). One September in ten brings afternoons above 29 °C, and one in ten stays below 24 °C.
Does it rain a lot in Barcelona in September?
September brings about 64 mm (2.5 in) of rain over roughly 6 days, which is fairly dry by Barcelona standards. On any given day the chance of at least 1 mm of rain is 18 percent.
What should I wear in Barcelona in September?
Pack light, breathable clothing, sun hat and sunscreen, refillable water bottle.
Is Barcelona crowded in September?
The main sights are busy in September. Main drivers: La Mercè on 24 September; Diada on 11 September; warm sea.
What time does it get dark in Barcelona in September?
Around the middle of September the sun sets at about 20:01 and rises at 07:31, giving 12.5 hours of daylight.