Barcelona weather in August 2025

Expect daytime maximum temperatures of 27°C in Barcelona, Spain in August based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 53 mm of rainfall in the month.

  • 27°C maximum daytime temperature in August in Barcelona27
    27°C max day temperature
  • 9 hours of sunshine per day
  • 8 days with some rainfall in August in Barcelona8
    8 days with some rainfall
  • 19°C minimum night-time temperature in August in Barcelona19
    19°C min night temperature
  • 14 hours of daylight per day in August in Barcelona14
    14 hours of daylight per day
  • Moderate heat & humidity in August in BarcelonaM
    Moderate heat & humidity
  • 53 mm monthly rainfall in August in Barcelona53
    53 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Barcelona8
    8 (Very High) UV index
  • 25°C sea temperature in August in Barcelona25
    25°C sea temperature

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The August 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 August?

Daytime temperatures usually reach 27°C in Barcelona in August with moderate heat and humidity, falling to 19°C at night.

How sunny is it in Barcelona in August?

There are normally 9 hours of bright sunshine each day in Barcelona in August - that's 62% of daylight hours.

How warm is the sea around Barcelona in August?

The average sea temperature around Barcelona in August is 25°C.

Does it rain in Barcelona in August?

There are usually 8 days with some rain in Barcelona in August and the average monthly rainfall is 53mm.

Barcelona August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:46 20:08
Saturday, 16th August 2025 06:01 19:49
Sunday, 31st August 2025 06:17 19:26

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