Weather in Barcelona in September 2025
Average weather
Average temperature in Barcelona in September
The expected average maximum temperature in September is +88°F with a maximum of +91°F and a minimum of +79°F.
The average maximum temperature goes up 14% by the end of the month, compared with the beginning of the month, from +88°F to +90°F.
Is Barcelona warm or cold in September?
Barcelona is typically hot in September.
Maximum temperatures go up compared to the previous month from +86°F to +88°F. The minimum temperature also goes up from +77°F to +77°F.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
September is one of the warmest months in Barcelona, here is the comparison with other months:
Climate in Barcelona in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +86°F | +88°F | +88°F | ||||
| Min. temperature | ||||||
| +72°F | +72°F | +72°F | ||||
| Max. temperature | ||||||
| +95°F | +99°F | +99°F | ||||
| Rainfall | ||||||
| 55 mm | 40 mm | 35 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 83% | 81% | 81% | ||||
| Air pressure | ||||||
| 1012 HPa | 1010 HPa | 1009 HPa | ||||
| Sunny days | ||||||
| 1 | 2 | 2 | ||||
| Cloudy days | ||||||
| 5 | 7 | 8 | ||||
| Rainy days | ||||||
| 21 | 17 | 17 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September often has better weather than August. It’s getting warmer as September arrives. The average maximum temperature goes up from +86°F to +88°F during the day. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 55 mm to 40 mm. It feels drier, as humidity decreases from 83% to 81%. The average wind speed doesn’t change much during September, staying around 2 m/s. The good news is there are likely to be more sunny days in September, from 1 to 2.
October brings much the same weather, it remains good.
Wind
The average wind speed is 3 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Barcelona is gradually decreasing during September, going from 3 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Barcelona?
Climate Change Over the Years
The climate in Barcelona in September has not changed that much over the last 43 years.
The average temperature was the lowest in 2021 (+83°F) and the highest in 2014 (+91°F). The driest year was 2024 with only 176 mm of rainfall, and the wettest year was 2004 with 654 mm.
FAQ
Is September a good time to visit Barcelona?
Can you sunbathe in Barcelona in September?
Is Barcelona rainy in September?
Is it sunny in Barcelona in September?
Monthly weather in Barcelona
Source of the data
For this page, we’ve looked at the typical weather in Barcelona, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
