Mendoza weather by month
Mendoza runs from about 7°C in July to 27°C in January, with October the wettest month at 49 mm.
warmest month
January
27°C
coolest month
July
7°C
wettest month
October
49 mm
worst air month
June
10 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 27°C | 16 mm | 401 h | 6 |
| February | 26°C | 9 mm | 335 h | 5 |
| March | 23°C | 2 mm | 350 h | 5 |
| April | 16°C | 16 mm | 277 h | 5 |
| May | 8°C | 12 mm | 237 h | 8 |
| June | 10°C | 10 mm | 242 h | 10 |
| July | 7°C | 0 mm | 298 h | 10 |
| August | 10°C | 19 mm | 234 h | 7 |
| September | 17°C | 0 mm | 327 h | 5 |
| October | 20°C | 49 mm | 340 h | 5 |
| November | 23°C | 6 mm | 390 h | 5 |
| December | 25°C | 4 mm | 408 h | 4 |
About 3,839 hours of sun a year. Roughly 15 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 2026-05-23. Full method, licences and the list of sources we rejected are on the methodology page.