Bilbao weather in August
August in Bilbao: nice, a little rain, with clean air — an excellent time to visit.
#3 of 12 months in Bilbao · #208 of 897 destinations to visit in August · comfort 88/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Bilbao in August
No notes yet. Open Bilbao on the map to add the first one.
Bilbao climate normals — August
| Daytime high | 24°C / 75°F | 😎 nice |
|---|---|---|
| Nighttime low | 18°C / 65°F | |
| Rainfall | 55 mm / 2.2 in | 🌦 some rain |
| Rainy days | 11 days | |
| Humidity | 80% | 💦 very humid |
| Dew point | 18°C / 64°F | |
| Sunshine | 10.9 h/day | |
| Daylight | 13.9 h | |
| Wind | 16 km/h / 10 mph | |
| Air quality (US AQI) | 41 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Bilbao?
Loading map…
Bilbao in August — FAQ
- Is August a good time to visit Bilbao?
- August in Bilbao: nice, a little rain, with clean air — an excellent time to visit. It ranks #3 of 12 months for Bilbao on SeasonMap's comfort score (88/100).
- What is the weather like in Bilbao in August?
- In August, Bilbao averages a daily high of 23.8°C and a low of 18.1°C, with about 55.4 mm of rain over roughly 11.4 rainy days.
- What is the air quality in Bilbao in August?
- Bilbao has a mean US Air Quality Index of about 41 in August.