Weather in Barcelona for September 2025
Until now, September 2025 in Barcelona is slightly cooler than the historical average by -1.5 °C.
Expect cooler weather in the next days in Barcelona with the forecast suggesting a temperature of 25.4 °C, lower than the historical average.
In general, the average temperature in Barcelona at the beginning of September is 27.1 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 24.6 °C by the end of September.
Barcelona experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 79.9 mm.
Is September a good time to visit Barcelona? check out the best time to travel to Barcelona page.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
Barcelona Weather September
Temperatures trend during September in Barcelona
September weather in Barcelona day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 27° /21° | 1.7 mm | 6 | |
| 2 Sept. | Partly cloudy | 27° /21° | 1.7 mm | 7 | |
| 3 Sept. |  Patchy rain possible | 27° /21° | 6.3 mm | 6 | |
| 4 Sept. | Patchy rain possible | 27° /21° | 6.1 mm | 6 | |
| 5 Sept. | Patchy rain possible | 27° /22° | 0.3 mm | 6 | |
| 6 Sept. |  Sunny | 27° /22° | 1.7 mm | 7 | |
| 7 Sept. | Partly cloudy | 28° /22° | 0.5 mm | 7 | |
| 8 Sept. | Sunny | 26° /21° | 2.6 mm | 6 | |
| 9 Sept. | Patchy rain possible | 25° /21° | 6.1 mm | 6 | |
| 10 Sept. | Patchy rain possible | 26° /21° | 1.1 mm | 6 | |
| 11 Sept. | Patchy rain possible | 26° /21° | 1.3 mm | 6 | |
| 12 Sept. | Light rain shower | 26° /21° | 2.4 mm | 6 | |
| 13 Sept. | Light rain shower | 25° /21° | 3.4 mm | 6 | |
| 14 Sept. |  Overcast | 26° /21° | 2.4 mm | 6 | |
| 15 Sept. | Sunny | 27° /23° | 0 mm | 1.5 | |
| 16 Sept. | Patchy rain possible | 25° /23° | 0.1 mm | 1.1 | |
| 17 Sept. | Sunny | 26° /23° | 0 mm | 1.4 | |
| 18 Sept. | Sunny | 26° /24° | 0 mm | 1.5 | |
| 19 Sept. | Sunny | 26° /23° | 0 mm | 1.4 | |
| 20 Sept. | Partly cloudy | 25° /23° | 0 mm | 6 | |
| 21 Sept. | Patchy rain possible | 25° /23° | 0.2 mm | 5 | |
| 22 Sept. | Patchy rain possible | 24° /22° | 2.9 mm | 5 | |
| 23 Sept. | Patchy rain possible | 26° /23° | 0.5 mm | 5 | |
| 24 Sept. | Sunny | 25° /22° | 0 mm | 6 | |
| 25 Sept. | Sunny | 25° /22° | 0 mm | 6 | |
| 26 Sept. | Patchy rain possible | 25° /22° | 1.7 mm | 5 | |
| 27 Sept. | Sunny | 25° /22° | 0 mm | 6 | |
| 28 Sept. | Partly cloudy | 25° /22° | 0.1 mm | 6 | |
| 29 Sept. | Patchy rain possible | 23° /18° | 1 mm | 6 | |
| 30 Sept. |  Moderate rain at times | 24° /18° | 3.5 mm | 6 | |
| Next | |||||
Barcelona weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Sunny | Patchy rain possible | Patchy rain possible |
| Temperatures | 29°/23° | 25°/20° | 22°/18° |
| Rainfall | 52 mm | 80 mm | 82 mm |
| Wind | 16.7 km/h | 17.6 km/h | 17.3 km/h |
| Humidity | 61% | 64% | 66% |
| Rainy days | 12 days | 22 days | 20 days |
| Dry days | 19 days | 8 days | 11 days |
Planning a trip to Barcelona? Discover the best time to visit
Guide for Barcelona in September
In September, Barcelona, Spain experiences a transition from the warm summer weather to the pleasant early autumn conditions. At the beginning of the month, the average temperature in Barcelona is around 25°, with plenty of sunshine and minimal rainfall.
The city is still bustling with tourists enjoying the last days of summer, and the beaches and outdoor cafes remain popular.
As the month progresses, the temperature gradually begins to decrease, with average highs of around 23° and cooler evenings. The sea temperature also starts to cool down, making swimming less popular towards the end of the month.
However, the weather remains generally dry and sunny, making it an ideal time to explore the city's attractions and outdoor spaces without the intense heat of summer.
Overall, September in Barcelona offers a delightful blend of warm days and comfortable evenings, perfect for sightseeing, outdoor activities, and al fresco dining.
Visitors can expect pleasant weather for most of the month, although it's always a good idea to pack a light jacket or sweater for the cooler evenings.
Barcelona in September - FAQ
Barcelona water temperatures in September
The average water temperature of the Mediterranean Sea near Barcelona in September is 25.8 °C. Temperatures remain fairly consistent throughout the month.
- What is the water temperature in Barcelona in September?
- The average water temperature in Barcelona in September is 25.8 °C.
- Can you swim in Barcelona in September?
- Ideal conditions for families and casual swimmers. You can stay in for long swims or reef explorations with no thermal protection required.
What to pack to Barcelona in September?
As you prepare for your trip to Barcelona in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Barcelona, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Barcelona
UV exposure in Barcelona during September
Quick links
Where is Barcelona?Get accurate weather forecasts for Barcelona, located at latitude 41.389 and longitude 2.159. Stay updated with localized weather information tailored for Barcelona.