Andorra la Vella weather by month
Andorra la Vella runs from about 4°C in December to 22°C in August, with May the wettest month at 177 mm.
warmest month
August
22°C
coolest month
December
4°C
wettest month
May
177 mm
worst air month
August
6 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 6°C | 39 mm | 220 h | 1 |
| February | 7°C | 56 mm | 235 h | 2 |
| March | 7°C | 152 mm | 277 h | 4 |
| April | 10°C | 96 mm | 319 h | 4 |
| May | 12°C | 177 mm | 398 h | 4 |
| June | 17°C | 93 mm | 374 h | 5 |
| July | 22°C | 19 mm | 422 h | 3 |
| August | 22°C | 28 mm | 394 h | 6 |
| September | 14°C | 78 mm | 279 h | 3 |
| October | 12°C | 147 mm | 240 h | 2 |
| November | 8°C | 26 mm | 229 h | 2 |
| December | 4°C | 29 mm | 196 h | 3 |
About 3,583 hours of sun a year. Roughly 96 rainy days a year.
These are long-run climate normals, not a forecast. A given year can sit well outside them. PM2.5 is a global model: near the coast it counts sea salt as fine particulate and reads high against ground stations, sometimes by a factor of two. Use the shape of the year, not the absolute number.
where these numbers come from
- · Temperature, rainfall and sunshine: ECMWF ERA5 reanalysis climate normals via Open-Meteo (CC BY 4.0), fetched once and stored.
- · PM2.5: Copernicus CAMS reanalysis, monthly means. Modelled, not station readings; near coasts CAMS counts sea salt as PM2.5 and reads high.
Last reviewed 2026-05-24. Full method, licences and the list of sources we rejected are on the methodology page.