Santiago de Compostela weather in August
August in Santiago de Compostela: warm, a little rain, with clean air — one of the best months to visit.
#2 of 12 months in Santiago de Compostela · #48 of 897 destinations to visit in August · comfort 94/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Santiago de Compostela in August
No notes yet. Open Santiago de Compostela on the map to add the first one.
Santiago de Compostela climate normals — August
| Daytime high | 24°C / 75°F | 🌤 warm |
|---|---|---|
| Nighttime low | 15°C / 59°F | |
| Rainfall | 35 mm / 1.4 in | 🌦 some rain |
| Rainy days | 7 days | |
| Humidity | 77% | 💦 very humid |
| Dew point | 15°C / 60°F | |
| Sunshine | 11.2 h/day | |
| Daylight | 13.9 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 32 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Santiago de Compostela?
Loading map…
Santiago de Compostela in August — FAQ
- Is August a good time to visit Santiago de Compostela?
- August in Santiago de Compostela: warm, a little rain, with clean air — one of the best months to visit. It ranks #2 of 12 months for Santiago de Compostela on SeasonMap's comfort score (94/100).
- What is the weather like in Santiago de Compostela in August?
- In August, Santiago de Compostela averages a daily high of 24.1°C and a low of 14.9°C, with about 35.2 mm of rain over roughly 7 rainy days.
- What is the air quality in Santiago de Compostela in August?
- Santiago de Compostela has a mean US Air Quality Index of about 32 in August.