Measurements:
°C
°F
Barcelona
48°F
SE 8 mph
Feels like: 44°F
Precip: 0%
World Resorts Spain Barcelona Weather September Weather in Barcelona

Barcelona Weather: September

Average Day Temperature: 80.3°F
Average Night Temperature: 72.7°F
Sea Water Temperature: 79.5°F
Number of Sunny Days: 19 days
Sunshine Hours: 11.8 - 13.1 hours
Number of Rainy Days: 4 days
Precipitation Totals: 2.1 in

Air Temperature in September, °F

Select Year: 2025 2024 2023

The highest day temperature in September 2025 was 85°F. The lowest night temperature was 64°F. The average values for day and night temperatures during September were 78.9°F и 74.3°F respectivly.

Barcelona Water Sea Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Barcelona was 81.0°F. The maximum and minimum values were 78.4°F and 83.8°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in September, in

Precipitation total in September for Barcelona is 2.1 in. It makes september the most rainy month of the year.

Wind Speed in September, mph

The average wind speed in September is 7.0 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Barcelona in September is 9.1 hours.

Best Time to Visit Barcelona
The most sunny months:
July 26 days
August 24 days
June 24 days
The most warm months:
August 86.5 °F
July 85.7 °F
September 80.3 °F
Warmest sea temperature:
August 82.1 °F
July 79.6 °F
September 79.5 °F
The most cold months:
January 55.7 °F
February 56.9 °F
December 58.2 °F
The most rainy months:
September 4 days
June 3 days
October 3 days
The most windy months:
March 8 mph
April 7 mph
November 7 mph

Barcelona on the Weather Map

24 Hours Weather Forecast
Barcelona
Local time: 05:05
05 dec, friday
0600 48°F
SE
8 mph
0900 48°F
S
5 mph
1200 52°F
SE
4 mph
1500 58°F
E
6 mph
1800 56°F
E
2 mph
2100 54°F
SE
4 mph
06 dec, saturday
0000 52°F
SE
5 mph
0300 52°F
SE
6 mph