Andorra la Vella weather in September
September in Andorra la Vella: nice, a little rain, with clean air — not the best time to visit.
#9 of 12 months in Andorra la Vella · #597 of 604 destinations to visit in September · comfort 25/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Andorra la Vella climate normals — September
| Daytime high | 21°C / 70°F | 😎 nice |
|---|---|---|
| Nighttime low | 12°C / 54°F | |
| Feels like (high) | 22°C / 72°F | |
| Rainfall | 56 mm / 2.2 in | 🌦 some rain |
| Rainy days | 11 days | |
| Humidity | 71% | 💧 humid |
| Dew point | 12°C / 54°F | |
| Sunshine | 10.3 h/day | |
| Daylight | 12.5 h | |
| Wind | 8 km/h / 5 mph | |
| Snowfall | 2.9 cm / 1.1 in | |
| Air quality (US AQI) | 36 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Andorra la Vella?
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Andorra la Vella in September — FAQ
- Is September a good time to visit Andorra la Vella?
- September in Andorra la Vella: nice, a little rain, with clean air — not the best time to visit. It ranks #9 of 12 months for Andorra la Vella on SeasonMap's comfort score (25/100).
- What is the weather like in Andorra la Vella in September?
- In September, Andorra la Vella averages a daily high of 21.3°C and a low of 12.2°C, with about 56.3 mm of rain over roughly 10.8 rainy days.
- What is the air quality in Andorra la Vella in September?
- Andorra la Vella has a mean US Air Quality Index of about 36 in September.
- Does it snow in Andorra la Vella in September?
- Andorra la Vella sees roughly 2.9 cm of snowfall in September.