Barcelona Weather in August
Spain · Mediterranean climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
August in Barcelona sees average temperatures ranging from a low of 21.8°C (71.2°F) to a high of 29.1°C (84.4°F), with a mean of 25.5°C (77.9°F). Compared to the annual average of 16.7°C (62.1°F), this month is 8.8°C warmer than the yearly norm. This is the hottest month of the year, reaching 29.1°C (84.4°F) on average. Precipitation averages 50.2mm, making it approximately 2.0mm drier than the monthly average of 52.0mm. The city receives an average of 12.2 hours of sunshine per day during August, with relative humidity averaging 72.5%. Wind speeds reach an average maximum of 19.0 km/h. For travelers, this month offers a hottest month of the year experience in Barcelona, with drier-than-average conditions compared to the rest of the year.
If you're planning trail runs or beach days in Barcelona, timing is everything. I did the Carretera de les Aigües route in May and conditions were flawless — 21°C, 12km/h breeze, UV at 6. July-August pushes UV to 9+, which is brutal between noon and 4pm; shift activities to early morning. Sea temperature hits 26°C in August, perfect for swims. The wind picks up reliably afternoons year-round, helping with heat but making paddleboarding tricky. October is the unsung hero for hiking — cool, golden light, empty paths.
August vs Adjacent Months
| Metric | July | August | September |
|---|---|---|---|
| Mean Temp | 25.2°C (77.4°F) | 25.5°C (77.9°F) | 21.8°C (71.2°F) |
| Rainfall | 29.0mm | 50.2mm | 85.0mm |
| Sunshine | 13.5 hrs | 12.2 hrs | 10.3 hrs |
| Humidity | 70.1% | 72.5% | 75.5% |
| Wind | 20.4 km/h | 19.0 km/h | 18.0 km/h |
| Rainy Days | 8.0 | 12.6 | 14.0 |
Seasonal Context
August falls in Summer in the Northern Hemisphere. Summer brings the warmest conditions of the year with the longest daylight hours. For travelers visiting Barcelona in August, the data indicates favorable conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Barcelona in August?
The average temperature in Barcelona during August ranges from 21.8°C (71.2°F) to 29.1°C (84.4°F), with a mean of 25.5°C (77.9°F).
How much does it rain in Barcelona in August?
Barcelona receives an average of 50.2mm of precipitation in August, spread across approximately 12.6 rainy days.
What should I pack for Barcelona in August?
Based on August weather data, pack lightweight, breathable clothing, sunscreen, and a hat.
Is August a good time to visit Barcelona?
August is a good time to visit Barcelona, with comfortable temperatures and manageable rainfall. However, it is the hottest month — consider early morning or evening activities.
Other Months for Barcelona
Cities with Similar August Climate (Mediterranean)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 41.39°, 2.17°. Timezone: Europe/Madrid. Last updated: 2026-07-30.