Last updated: February 6, 2025
September in Barcelona, Spain boasts a delightful average temperature of 22°C (71°F), making it an ideal time for both locals and tourists to explore the vibrant city. While daytime highs can reach up to 30°C (86°F), evenings tend to cool down, with minimum temperatures dipping to 12°C (54°F). The month experiences an average of 81 mm (3.2 in) of precipitation over approximately 12 days, contributing to the pleasant humidity level of 68%. Whether you're strolling along the beach or enjoying the bustling streets, September offers a perfect blend of warmth and refreshment.
In September, Barcelona experiences a delightful transition into autumn, with temperatures that strike a perfect balance between the warmth of summer and the coolness of fall. The minimum temperature hovers around 12°C (54°F), while the average reaches a comfortable 22°C (71°F), peaking at a maximum of 30°C (86°F). This month marks a gradual decline from the sweltering highs of August, making it an ideal time for outdoor activities and exploring the city's vibrant streets. As the days shorten and the air becomes crisper, visitors can enjoy milder evenings perfect for al fresco dining, all while soaking in the rich cultural atmosphere that Barcelona has to offer.
September marks a significant shift in Barcelona's precipitation patterns, with 81 mm (3.2 in) of rainfall recorded over 12 days—the highest for the month and a notable increase compared to the preceding summer months. This uptick signals the city's transition from the dry heat of summer to the more temperate fall season. The rainfall intensity in September lays the groundwork for the wetter months ahead, particularly October, which averages 121 mm (4.7 in). As nature reawakens after the long summer, locals and visitors can expect a refreshing shift in the atmosphere, where the vibrant cityscape is accentuated by lush greenery brought forth by the rain. This month serves as a reminder of the vibrant climatic diversity that characterizes Barcelona throughout the year.
As summer gives way to autumn in Barcelona, September brings a noticeable shift in humidity, rising to 68% from the lower levels experienced in the peak months of July and August, which hover around 64%. This increase signifies a transition, as the city prepares for the moister autumn months ahead, with humidity set to climb further in October and beyond, reaching 77%. Overall, September acts as a bridge, where the lingering warmth of summer meets the refreshing yet humid embrace of fall, creating a unique climate that invites both locals and visitors to enjoy the city's vibrant atmosphere.
As summer transitions to autumn in Barcelona, the UV Index in September settles at a high level of 7, with a burn time of approximately 25 minutes. This marks a decrease from the peak UV Index of 10 experienced in June and July, yet remains higher than the earlier months of the year. The trend indicates a gradual waning of the intense summer sun, but caution is still advised for those enjoying outdoor activities. As daylight hours begin to shorten, it's crucial to stay informed about sun exposure to protect your skin. For more detailed information about solar UV levels throughout the year, visit Barcelona UV Index.
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September in Barcelona offers a delightful transition from the vibrant summer sunshine to the cooling embrace of autumn, basking in 338 hours of glorious daylight. This month follows a peak summer extravaganza, where July claims the crown with 425 hours, and while September sees a drop, it still holds onto a generous amount of sunshine, making it ideal for those looking to extend their beach days. As the days grow shorter, the sun-drenched vibes continue to linger, and with the seasonal shift, September serves as a beautiful farewell to summer, smoothly blending the warmth of lingering sunlight with the promise of autumn’s charm. With May and June leading up to summer with impressive totals of 404 and 412 hours, it’s evident that Barcelona bathes in warmth for most of the year, making it a year-round destination for sun seekers and culture enthusiasts alike.
September in Barcelona typically sees a 35% chance of sunny weather, making it one of the more overcast months of the year. This marks a decline from the brighter days of summer, particularly July, which boasts a sunny likelihood of 70%. As the sweltering heat of August gives way to the cooler autumn breeze, the chance of sunshine diminishes further. With the average chances fluctuating throughout the year, September stands out as a transitional month, bridging the vibrant summer season and the milder fall. If you're planning a visit, it's wise to consider the potential for cloud cover, while still enjoying the charm of Barcelona's early autumn ambiance.
As summer wanes, September in Barcelona greets residents and visitors with a delightful average of 12 hours of daylight, a gentle transition from the longer days of June and July. Following a peak of 15 hours in June, the daylight begins to gradually taper off, reminiscent of the shifting seasons. The daylight hours decrease further in October, highlighting a trend of decreasing sunlight as autumn approaches. Yet, the balance of warm days and cooler nights makes September a perfect time to enjoy the vibrant city as it begins to embrace the softer hues of fall.
As September draws in, Barcelona enjoys a refreshing breeze with an average wind speed of 2.7 m/s (6 mph). This slight uptick from the summer months, where winds dipped to 2.4 m/s (5 mph) in August, brings a welcome change, hinting at the transition into autumn. The wind generally maintains a gentle presence throughout the year, with the spring months experiencing the lowest speeds. However, as September arrives, it balances warmth with coolness, making evenings especially pleasant for strolls along the Mediterranean coastline. This moderate September wind prepares the city for the crispness of approaching fall while serving as a reminder of the vibrant summer that has just passed.
The weather in Barcelona changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Barcelona and find detailed weather information for every month.
In September, the weather tends to be much warmer, with average temperatures around 22°C (71°F) and maximums reaching up to 30°C (86°F). This month also sees a higher level of rainfall, with 81 mm (3.2 in) of precipitation spread over 12 days, contributing to a humidity level of 68%. In contrast, January experiences cooler temperatures, averaging just 8°C (47°F) and peaking at a maximum of 20°C (68°F). Although January is less rainy, with only 56 mm (2.2 in) of precipitation over 6 days, it has a higher humidity level of 79%. For a deeper look into January's weather, you can check Barcelona weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a mild 12°C (54°F) at night to a warm average of 22°C (71°F), peaking at a maximum of 30°C (86°F). This month also experiences considerable rainfall, with 81 mm (3.2 in) of precipitation spread over 12 days, accompanied by a humidity level of 68%. In contrast, February is much cooler, with nighttime lows dropping to 0°C (33°F) and an average temperature of only 10°C (51°F), reaching up to 21°C (69°F) during warmer days. The precipitation in February is lighter, totaling 46 mm (1.8 in) over just 7 days, but the humidity is slightly higher at 74%. For more detailed weather specifics, you can check Barcelona weather in February.
In September, the weather tends to be warm and humid, with average temperatures around 22°C (71°F) and highs reaching up to 30°C (86°F), making it a lively time for outdoor activities. The month experiences around 81 mm (3.2 in) of precipitation over 12 days, resulting in a humidity level of 68%. In contrast, March exhibits cooler temperatures, with an average of 11°C (53°F) and maximums reaching 21°C (71°F). Rainfall is less frequent, totaling 47 mm (1.8 in) across just 7 days, while the humidity is slightly higher at 71%. For more detailed information, check out Barcelona weather in March.
September and April showcase distinct weather characteristics, reflecting the transition between summer and autumn in September and the budding freshness of spring in April. In September, temperatures range from a minimum of 12°C (54°F) to an average of 22°C (71°F), peaking at 30°C (86°F), accompanied by a higher average humidity of 68% and 81 mm (3.2 in) of precipitation over 12 days. In contrast, April experiences cooler temperatures, with a minimum of 4°C (40°F) and an average of 13°C (56°F), reaching a maximum of 24°C (75°F). The month sees a slightly lower level of rainfall, totaling 71 mm (2.8 in) over 9 days, and humidity remains comparable at 69%. For more details on April weather, you can refer to Barcelona weather in April.
In September, temperatures range from a minimum of 12°C (54°F) to a pleasant average of 22°C (71°F), reaching a maximum of 30°C (86°F) on warmer days. The month experiences more rainfall, with 81 mm (3.2 in) spread over approximately 12 days, contributing to a humidity level of 68%. In contrast, May sees cooler temperatures, with a minimum of 7°C (44°F) and an average of 17°C (63°F), also peaking at 30°C (86°F). Rainfall is significantly lower at 49 mm (1.9 in) across about 9 days, with humidity slightly lower at 66%. For a detailed look at the weather patterns, you can check Barcelona weather in May.
September and June present a contrast in weather patterns, though both months enjoy mild temperatures. In September, the average temperature hovers around 22°C (71°F), with a minimum of 12°C (54°F) and a maximum of 30°C (86°F). This month sees a higher amount of precipitation, totaling 81 mm (3.2 in) over approximately 12 days, along with a humidity level of 68%. In comparison, June features a slightly warmer average of 21°C (71°F) with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 32°C (90°F). This month experiences significantly less precipitation—only 26 mm (1.0 in) over 6 days—and slightly lower humidity at 65%. For more specific details, you can explore Barcelona weather in June.
In comparing the weather between September and July, September generally experiences slightly cooler temperatures, with a minimum of 12°C (54°F) compared to July's minimum of 16°C (62°F). The average temperature in September is around 22°C (71°F), which is a bit lower than July's average of 24°C (76°F). Although both months are warm, July reaches a higher maximum of 31°C (88°F) compared to September's 30°C (86°F). Additionally, September sees more precipitation, with 81 mm (3.2 in) over 12 days, while July is drier, receiving only 35 mm (1.4 in) in just 5 days. Despite slightly higher humidity in September at 68% versus 64% in July, both months offer pleasant summer weather. For more details on the weather patterns during July, visit Barcelona weather in July.
In comparing the weather of September and August, September tends to be slightly cooler, with average temperatures dropping from 25°C (77°F) in August to 22°C (71°F) in September. While the minimum temperatures in September are lower at 12°C (54°F), the maximums reach 30°C (86°F), compared to August's hotter peak of 34°C (94°F). Additionally, September experiences more precipitation, with 81 mm (3.2 in) over 12 days, while August is relatively drier, receiving only 37 mm (1.4 in) across 7 days. Humidity levels are also marginally higher in September at 68% compared to 64% in August, contributing to a more humid feel. For further details, check out Barcelona weather in August.
September typically offers warmer temperatures with a minimum of 12°C (54°F) and an average high of 30°C (86°F), while October experiences cooler evenings, with minimums dropping to 7°C (45°F) and an average high of 26°C (79°F). In terms of precipitation, October is comparatively wetter, with 121 mm (4.7 in) of rainfall across 11 days, compared to September’s 81 mm (3.2 in) over 12 days. Additionally, October’s humidity rises slightly to 77%, up from September's 68%. For more detailed information, check out Barcelona weather in October.
September and November present quite distinct weather patterns. In September, the temperatures are noticeably warmer, ranging from a minimum of 12°C (54°F) to a maximum of 30°C (86°F), with an average of 22°C (71°F). The month experiences 81 mm (3.2 in) of precipitation over approximately 12 days, and the humidity hovers around 68%. In contrast, November brings cooler temperatures with a minimum of 3°C (38°F) and a maximum of 23°C (73°F), averaging just 13°C (55°F). Although it is slightly drier with 67 mm (2.6 in) of rain over about 8 days, humidity rises to 79%. To learn more about the weather specifics in November, check out Barcelona weather in November.
September weather tends to be warmer and more humid compared to December. With average temperatures reaching 22°C (71°F) and highs of 30°C (86°F), September boasts a comfortable but drier feel, receiving about 81 mm (3.2 in) of precipitation over 12 days. In contrast, December brings cooler temperatures, averaging around 10°C (50°F) with maximums only reaching 18°C (65°F). The month experiences significantly less rainfall at 30 mm (1.2 in) across just 4 days, although humidity remains relatively high at 79%. For more specific insights on December weather, you can check Barcelona weather in December.
As summer gracefully transitions into autumn, September in Barcelona offers a delightful blend of warm days and cooler evenings. With temperatures averaging around 22°C (71°F), you'll experience the perfect backdrop for exploring the city's vibrant culture and stunning architecture. However, be prepared for occasional rain, as the month averages about 12 days of precipitation, contributing to a moderately humid atmosphere. This combination sets September apart from the peak summer months, which are typically hotter and drier. If you're planning a visit, this is a wonderful time to enjoy the city with fewer crowds while soaking in the unique Barcelona Climate that enhances its charm.