Temperatures in September
It's warm in September in Barcelona with an average temperature of 27°C. Temperatures this month range from a low of 25°C to a high of 29°C. At night, you can expect temperatures between 17°C and 22°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Barcelona in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Barcelona with hot temperatures, averaging around 28°C during the day and nights close to 21°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month.
Since temperatures can differ between day and night, it’s a good idea to dress in layers.
Mid-September
By mid-September, the average daytime temperature stays the same at 28°C, with nights close to 20°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
Temperatures vary between day and night, so it’s smart to wear layers.
End of September
By the end of September, the average daytime temperature in Barcelona will be around 26°C, with nights close to 18°C. A shower might show up, but overall the weather will be dry and sunny.
As it gets cooler in the evening, it’s best to wear layers.
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Water temperature
The water temperature at Barcelona is 27°C this month. Nice and warm for a swim.
Precipitation in September
In September, there is an average of 77 mm of precipitation, spread over 6 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
The average precipitation chance is 21% per day this month. Though that seems low, there are also a few days with a higher chance of precipitation.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Barcelona. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Barcelona in September |
London | ||
|---|---|---|---|
 Average Temperature |
27°C | 20°C | |
 High Temp |
29°C | 22°C | |
| Low Temp |
25°C | 17°C | |
 Total Precipitation |
77 mm | 44 mm | |
| Rainy Days |
6 days | 8 days | |
August
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit Barcelona?
Want nice weather? Then September is a great time to be in Barcelona. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for Barcelona in September
With 33°C, Barcelona hit the highest temperature in the last 10 years in September 2016. The lowest daytime temperature in this month was 19°C in 2020. The extreme night temperatures ranged from a low of 10°C to a high of 26°C.
Check out the climate of Barcelona for all months and discover the best travel time
Curious about the climate in other parts of Spain? Check out the weather and climate in places like Ibiza, Majorca, Tenerife, or have a look at other destinations in Spain.
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Daily Temperature in September in Barcelona
This chart shows the average daily temperatures, both day and night, for each day in September in Barcelona, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Barcelona
The chart below shows the average daily precipitation in September for Barcelona, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 6 days of rain in Barcelona.
Daily UV Index in September in Barcelona
This chart shows the average daily UV index in September in Barcelona, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Barcelona Over the Years
This chart shows the average temperature in September in Barcelona, measured in degrees Celsius, over the past years.
Total Precipitation in September in Barcelona Over the Years
This chart shows the average precipitation in September in Barcelona, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Barcelona
Click on a specific day in September for detailed info on the typical weather on that day in Barcelona. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Barcelona
Have you been to Barcelona in September?
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Average Weather in Barcelona by Month
Click on a month below to see detailed weather info for Barcelona. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Barcelona for all months at once
