🇪🇸 Weather in Barcelona in August
This is what the weather in Barcelona (Catalonia, Spain) was like in August in 2017–2026.
Key facts at a glance
Avg. daytime high
31.2 °C
29.6 °C – 32.7 °C
Avg. night-time low
21.5 °C
20.2 °C – 23.0 °C
Avg. rain days in period
8.8
28 % of days · ≥ 1.0 mm
Avg. precipitation in period
44.0 mm
20.2 mm – 80.4 mm
Avg. sunshine per day
n/a
Sunshine duration is not available from this data source.
Avg. sea temperature
–
Sea temperature unavailable for today (daily limit).
Extremes: Highest temperature 38.8 °C (17 Aug 2025) · Lowest temperature 15.1 °C (11 Aug 2017) · Avg. daily peak wind 18 km/h
Weather mix of all days
- 108Sunny
- 84Partly cloudy
- 10Cloudy
- 67Light rain
- 21Rain
Summary
- On average 31.2 °C during the day and 21.5 °C at night.
- On average 8.8 rain days (Rain day = at least 1.0 mm of precipitation) with 44.0 mm of precipitation in total.
- Prevailing: Sunny.
- Warmest year: 2022 (avg. 32.7 °C), coolest: 2021 (avg. 29.6 °C).
- Wettest year: 2018 (80.4 mm), driest: 2024 (20.2 mm).
- Extremes: 38.8 °C on 17 Aug 2025 and 15.1 °C on 11 Aug 2017.
Overall values from all 10 years. How is this calculated?
Charts
Temperatures per year
Average over your travel period
Precipitation & rain days
Year by year
2026
Avg. max32.6°Avg. min23.0°- Rain days
- 11 Rain days
- Precipitation
- 40.5 mm
- Avg. sunshine per day
- n/a
- Sea temperature
- –
Max 36.6 °C · Min 18.2 °C
2025
Avg. max31.6°Avg. min21.9°- Rain days
- 11 Rain days
- Precipitation
- 48.5 mm
- Avg. cloud cover
- 35 % cloudy
- Sea temperature
- –
Max 38.8 °C · Min 16.5 °C
2024
Avg. max31.9°Avg. min22.1°- Rain days
- 7 Rain days
- Precipitation
- 20.2 mm
- Avg. cloud cover
- 34 % cloudy
- Sea temperature
- –
Max 34.9 °C · Min 18.2 °C
2023
Avg. max32.2°Avg. min21.5°- Rain days
- 6 Rain days
- Precipitation
- 45.2 mm
- Avg. cloud cover
- 31 % cloudy
- Sea temperature
- –
Max 38.0 °C · Min 15.7 °C
2022
Avg. max32.7°Avg. min22.7°- Rain days
- 12 Rain days
- Precipitation
- 53.8 mm
- Avg. cloud cover
- 37 % cloudy
- Sea temperature
- –
Max 37.7 °C · Min 17.6 °C
2021
Avg. max29.6°Avg. min20.2°- Rain days
- 5 Rain days
- Precipitation
- 24.8 mm
- Avg. cloud cover
- 46 % cloudy
- Sea temperature
- –
Max 35.4 °C · Min 17.8 °C
2020
Avg. max30.1°Avg. min21.0°- Rain days
- 8 Rain days
- Precipitation
- 49.1 mm
- Avg. cloud cover
- 38 % cloudy
- Sea temperature
- –
Max 33.6 °C · Min 16.3 °C
2019
Avg. max30.7°Avg. min20.9°- Rain days
- 7 Rain days
- Precipitation
- 49.2 mm
- Avg. cloud cover
- 36 % cloudy
- Sea temperature
- –
Max 34.9 °C · Min 19.0 °C
2018
Avg. max29.9°Avg. min21.2°- Rain days
- 14 Rain days
- Precipitation
- 80.4 mm
- Avg. cloud cover
- 49 % cloudy
- Sea temperature
- –
Max 35.8 °C · Min 17.4 °C
2017
Avg. max30.6°Avg. min20.7°- Rain days
- 7 Rain days
- Precipitation
- 28.4 mm
- Avg. cloud cover
- 47 % cloudy
- Sea temperature
- –
Max 35.8 °C · Min 15.1 °C
Frequently asked questions
- How warm is it in Barcelona in August?
- Daytime highs averaged 31.2 °C, night-time lows 21.5 °C. The highest value of the past 10 years was 38.8 °C (17 Aug 2025), the lowest 15.1 °C (11 Aug 2017).
- How often does it rain in Barcelona in August?
- On average there were 8.8 rain days (at least 1 mm) with 44.0 mm of precipitation in total.
Check your exact travel dates
Choose your travel period – we show the weather for exactly those days.
Other destinations in August
Data sources
- Weather data
- Data obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program
Reanalysis (weather model constrained by observations) on a coarse grid of about 50 km. Values represent a large area and can differ from local conditions, especially on islands, coasts and in mountains. No sunshine duration.
Reanalysis (weather model constrained by observations)
Reanalysis values represent a grid cell (approx. 25–50 km) and may differ from local measurements on coasts, islands and in mountains. - Sea temperature
- MUR SST data were provided by JPL under support by NASA MEaSUREs program; accessed via NOAA CoastWatch ERDDAP
Daily multi-scale ultra-high resolution (≈ 1 km) analysis of satellite measurements (infrared, microwave) and in-situ data. Represents the foundation temperature below the daily warm surface layer. (Satellite and in-situ analysis) - Place search
- Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)