Barcelona weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Excellent
Best time to visit: May – August
What is the weather like in Barcelona in August?
In August, Barcelona is warm: daytime highs average 27 °C, and even at night it stays warm at around 21 °C. The sea averages 25.6 °C – pleasant for swimming. The sun shines for around 8 hours a day. Rain falls on about 7 days, adding up to 43 mm. The air is often humid and muggy. All in all, August is an excellent month for a holiday in Barcelona.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 98 | 92 | 78 |
| Day | 26° | 27° | 24° |
| Night | 21° | 21° | 19° |
| Sea | 24° | 26° | 24° |
| Sun | 9 h | 8 h | 7 h |
| Rain days | 5 | 7 | 11 |
More details for August
- Daylight
- 13 h 53 min07:00 – 20:53
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 24 daysdew point 18 °C or more
- Wind
- 16 km/haverage daily peak
- Cloud cover
- 40 %on average
- Hot days
- 2 days30 °C or more
- Time zone
- UTC+2Europe/Madrid
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %88 %
- Few rainy daysweight 30 %80 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in August
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
Barcelona in August: quick answers
Is Barcelona hot in August?
Warm rather than hot: in August, daytime highs in Barcelona average 27 °C and nights cool to about 21 °C. On about 2 days the thermometer climbs to 30 °C or more.
Can you swim in Barcelona in August?
Yes. In August the sea averages 25.6 °C – pleasant for swimming.
Does it rain much in Barcelona in August?
Rain falls on about 7 days, adding up to 43 mm.
Barcelona month by month
The whole year in BarcelonaAll destinations: SpainWhere to go in AugustSea temperature in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)