Barcelona weather in September 2025

Expect 25°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Barcelona in September. Check more long-term weather averages for Barcelona in September before you book your next holiday to Spain in 2025/2026.

  • 25°C maximum daytime temperature in September in Barcelona25
    25°C max day temperature
  • 7 hours of sunshine per day
  • 9 days with some rainfall in September in Barcelona9
    9 days with some rainfall
  • 17°C minimum night-time temperature in September in Barcelona17
    17°C min night temperature
  • 12 hours of daylight per day in September in Barcelona12
    12 hours of daylight per day
  • Low heat & humidity in September in BarcelonaL
    Low heat & humidity
  • 73 mm monthly rainfall in September in Barcelona73
    73 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in Barcelona6
    6 (High) UV index
  • 24°C sea temperature in September in Barcelona24
    24°C sea temperature

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The September weather guide for Spain (Barcelona) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Barcelona in September?

Daytime temperatures usually reach 25°C in Barcelona in September with low heat and humidity, falling to 17°C at night.

How sunny is it in Barcelona in September?

There are normally 7 hours of bright sunshine each day in Barcelona in September - that's 55% of daylight hours.

How warm is the sea around Barcelona in September?

The average sea temperature around Barcelona in September is 24°C.

Does it rain in Barcelona in September?

There are usually 9 days with some rain in Barcelona in September and the average monthly rainfall is 73mm.

Barcelona September sunrise & sunset times

Browse the sunrise and sunset times for Barcelona in September 2025. Select a month to view Barcelona sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:18 19:24
Monday, 15th September 2025 06:32 19:00
Tuesday, 30th September 2025 06:47 18:35

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