Barcelona · September
Best travel monthTravel seasonSpain · Europe
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, range from coolest to warmest dayØ dayrange | 14° (57°)8– (46–)19 (66) | 15° (59°)10– (50–)20 (68) | 17° (63°)11– (52–)21 (70) | 19° (66°)14– (57–)24 (75) | 22° (72°)17– (63–)26 (79) | 26° (79°)21– (70–)31 (88) | 29° (84°)25– (77–)32 (90) | 30° (86°)25– (77–)32 (90) | 27° (81°)22– (72–)30 (86) | 23° (73°)18– (64–)26 (79) | 18° (64°)13– (55–)23 (73) | 15° (59°)10– (50–)19 (66) |
Ø night, range from coldest to warmest nightØ nightrange | 6° (43°)0– (32–)10 (50) | 7° (45°)2– (36–)11 (52) | 9° (48°)3– (37–)13 (55) | 12° (54°)7– (45–)16 (61) | 15° (59°)10– (50–)19 (66) | 20° (68°)14– (57–)23 (73) | 23° (73°)19– (66–)25 (77) | 23° (73°)17– (63–)26 (79) | 20° (68°)14– (57–)24 (75) | 16° (61°)11– (52–)20 (68) | 11° (52°)4– (39–)16 (61) | 7° (45°)2– (36–)12 (54) |
☀️Sunshine | 6h UV 4 | 7h UV 5 | 8h UV 6 | 9h UV 8 | 10h UV 9 | 11h UV 9 | 11h UV 9 | 10h UV 8 | 8h UV 7 | 7h UV 5 | 6h UV 4 | 6h UV 4 |
🌊Water Temp | 14° (57°) | 13° (55°) | 14° (57°) | 16° (61°) | 18° (64°) | 22° (72°) | 25° (77°) | 26° (79°) | 25° (77°) | 22° (72°) | 18° (64°) | 15° (59°) |
🌧Rain Days | 3d34mm (1.3") | 3d28mm (1.1") | 4d43mm (1.7") | 4d53mm (2.1") | 3d48mm (1.9") | 3d23mm (0.9") | 1d25mm (1.0") | 3d47mm (1.8") | 4d62mm (2.5") | 5d79mm (3.1") | 4d58mm (2.3") | 2d21mm (0.8") |
Best travel time current monthØ = average · small figures = range: coolest–warmest day / coldest–warmest nightClimate data 2005–2025 · Source: ERA5 + station data
Travel season — mid-range prices, good availability.
September is among the best months in Barcelona: only 4 rain days, 27°C (81°F) highs, and good sunshine make for ideal holiday conditions.
Daytime highs average 27°C (81°F), cooling to 20°C (68°F) at night (daily average: 23°C (73°F)). Peaks reach around 30°C (86°F), the coldest nights around 14°C (57°F). The sun shines an average of 8 hours per day; there are 4 rain days with 62 mm (2.4 in) total. Sea temperature is 25°C (77°F) — pleasantly warm for long swim sessions.
Pack light summer clothing, sunscreen, and swimwear — beach and water conditions in September are ideal.
Events & Festivals
- Festes de la Mercè24 September (city holiday), festival week 23–27 September
Barcelona's biggest city festival in honour of its patron saint. Free concerts on Plaça de Catalunya and Plaça Reial, castellers (human towers), giant-figure parades and spectacular fireworks on Montjuïc.
Packing list for Barcelona in September
- T-shirts and shorts
- Swimwear and beach towel
- SPF 50 sunscreen
- Sunglasses
- Sun hat
- Small umbrella (occasional showers possible)
- Travel first-aid kit
Frequently Asked Questions
- Is September a good time to visit Barcelona?
- Yes — September is one of the best months to visit Barcelona (Climate Score: 73/100). Pleasant temperatures (27°C (81°F)), good sunshine (8 h/day), and few rain days (4) make it one of the most recommended months.
- How warm is it in Barcelona in September?
- In September, Barcelona sees daily highs of 27°C (81°F). Nights cool to 20°C (68°F), with a daily average of 23°C (73°F). Peaks reach around 30°C (86°F), the coldest nights around 14°C (57°F).
- How much rain falls in Barcelona in September?
- In September, Barcelona receives an average of 62 mm (2.4 in) of rain over 4 rain days. The rain falls on few days, but heavily.
- How many sunshine hours does Barcelona get in September?
- Barcelona averages 8 sunshine hours per day in September — close to the annual average.
- How warm is the water in Barcelona in September?
- Water temperature in Barcelona in September averages 25°C (77°F) — pleasantly warm for swim sessions.
