Aix-en-Provence weather by month
Aix-en-Provence runs from about 5°C in December to 25°C in August, with March the wettest month at 186 mm.
warmest month
August
25°C
coolest month
December
5°C
wettest month
March
186 mm
worst air month
March
10 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 6°C | 32 mm | 210 h | 8 |
| February | 8°C | 97 mm | 234 h | 8 |
| March | 10°C | 186 mm | 273 h | 10 |
| April | 13°C | 53 mm | 338 h | 9 |
| May | 16°C | 115 mm | 358 h | 6 |
| June | 21°C | 63 mm | 402 h | 7 |
| July | 24°C | 24 mm | 429 h | 5 |
| August | 25°C | 20 mm | 404 h | 8 |
| September | 18°C | 82 mm | 314 h | 5 |
| October | 16°C | 80 mm | 263 h | 8 |
| November | 10°C | 55 mm | 228 h | 8 |
| December | 5°C | 38 mm | 235 h | 9 |
About 3,688 hours of sun a year. Roughly 85 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 2026-05-25. Full method, licences and the list of sources we rejected are on the methodology page.