Weather in Barcelona in August 2025
- August is usually the hottest month of the year in Barcelona;
Average weather
Average temperature in Barcelona in August
Going from a maximum of +36°C during the day to a minimum of +18°C during the night, the temperature in August averages around +30°C.
The average maximum temperature goes down 22% by the end of the month, compared with the beginning of the month, from +31°C to +27°C.
Is Barcelona warm or cold in August?
Barcelona is typically warm in August.
Maximum temperatures go up compared to the previous month from +27°C to +27°C. The minimum temperature also goes up from +21°C to +22°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
August is the hottest month in Barcelona, here is the comparison with other months:
Water temperature in Barcelona in August
Water in Barcelona in August is Comfortable. It varies from +23°C to +26°C, with an average of +24°C. This is almost similar to the air temperature, which averages +27°C.
The water temperature in August is one of the warmest of the entire year:
Can you swim in Barcelona in August?
Climate in Barcelona in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +27°C | +27°C | +25°C | ||||
| Min. temperature | ||||||
| +15°C | +16°C | +12°C | ||||
| Max. temperature | ||||||
| +34°C | +36°C | +32°C | ||||
| Rainfall | ||||||
| 28 mm | 55 mm | 82 mm | ||||
| Wind | ||||||
| 3 m/s | 2 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +23°C | +24°C | +24°C | ||||
| Humidity | ||||||
| 70% | 70% | 72% | ||||
| Air pressure | ||||||
| 1015 HPa | 1015 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 17 | 13 | 9 | ||||
| Cloudy days | ||||||
| 6 | 6 | 6 | ||||
| Rainy days | ||||||
| 6 | 8 | 10 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August typically has worse weather conditions compared to July. The temperature levels stay the same in the area of +27°C for average maximum temperature during the day. Prepare for more rain. Average rainfall goes from 28 mm to 55 mm. Humidity levels don’t change as the month goes on, averaging around 70%. Winds are calmer in comparison to July, going down from 3 m/s to 2 m/s on average. The days becoming less sunny, going from 17 sunny days in July to 13 in August.
September brings much the same weather, it remains good.
Wind
The average wind speed is 3 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Barcelona is gradually increasing during August, going from 3 m/s to 3 m/s over the course of the month.
Rain
How was the weather last August in Barcelona?
Climate Change over Years
The climate in Barcelona in August has not changed much over the last 43 years.
The average temperature was the lowest in 1984 (+18°C) and the highest in 2022 (+22°C). The driest year was 1990 with only 378 mm of rainfall, and the wettest year was 2020 with 1436 mm.
FAQ
Is August a good time to visit Barcelona?
Can you sunbathe in Barcelona in August?
Can you swim in Barcelona in August?
Is Barcelona rainy in August?
Is it sunny in Barcelona in August?
Other cities in Spain
Monthly weather in Barcelona
Source of the data
For this page, we’ve looked at the typical weather in Barcelona, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.