Barcelona Weather in September
Barcelona in September sees high temperatures, with highs around 25°C (77°F) and overnight lows of 19°C (66°F). Rainfall is fairly high at around 89 mm (3.5 in) on average, so pack waterproofs just in case.
Rainfall in Barcelona in September
Rain is expected on roughly 9 days, totalling around 89 mm (3.5 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Barcelona in September
If you're visiting Barcelona in September, expect perfect temperatures with highs of 25°C (77°F) and overnight lows of 19°C (66°F). September marks the summer season. Overall, the month follows a fairly predictable daily temperature pattern. With lows of 19°C (66°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Barcelona in September
The city usually sees around 218 hours of sunlight, indicating many sunny days — a great month for sightseeing.
Wind Speed in Barcelona in September
September sees wind speeds averaging 2 m/s (4 knots). You'll typically experience pleasant light breezes that move leaves slightly and feel refreshing. As an average, expect variation from very calm days to periods with more apparent air movement.
Average water temperature in September
With water at 22°C (72°F), you can expect warm, pleasant conditions for any water activity. There's no adjustment period — it feels comfortable straight away.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August, September and October typically offer the best weather for Barcelona.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Spain, check out our Barcelona's climate page.
Barcelona Temperature in September
Min Temperature
19°C (66°F)
Max Temperature
25°C (77°F)
Water Temperature
22°C (72°F)
Chance of Rain
29%
Precipitation
89 mm (3.5 in)
Rainy days
9 days
Humidity
74%
Windspeed
2 m/s (4 knots)
Sunshine
218 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Barcelona typically stay consistent throughout September, with daily highs averaging around 25°C (77°F). Nights are pleasant, with lows typically ranging from 15°C (59°F) to 19°C (66°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Barcelona in September
Browse day-by-day weather records for Barcelona spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Barcelona historical weather extremes in September
According to our 27 years of weather records for Barcelona, the following extremes were recorded between 1998 and 2025.
- The hottest September day on record in Barcelona reached 32°C (90°F) (September 4, 2016).
- The lowest daytime temperature in September was 18°C (64°F), recorded on September 15, 2009.
- Nighttime temperatures dropped to 6°C (43°F) on September 26, 2002, marking the coldest September night on record.
Best Places in Spain in September
Find out more about the weather in Spain and which places have the best travel conditions in this month. See all of Spain in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Barcelona in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. The water temperature sits at about 22°C (72°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Barcelona in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Spain, check out our Barcelona's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Barcelona climate overview or explore weather in Spain.
