Salta weather by month
Salta runs from about 8°C in July to 21°C in January, with November the wettest month at 293 mm.
warmest month
January
21°C
coolest month
July
8°C
wettest month
November
293 mm
worst air month
July
8 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 21°C | 249 mm | 322 h | 6 |
| February | 21°C | 253 mm | 290 h | 5 |
| March | 21°C | 171 mm | 294 h | 5 |
| April | 17°C | 79 mm | 224 h | 5 |
| May | 9°C | 29 mm | 245 h | 6 |
| June | 11°C | 12 mm | 283 h | 6 |
| July | 8°C | 5 mm | 295 h | 8 |
| August | 11°C | 4 mm | 303 h | 7 |
| September | 17°C | 35 mm | 320 h | 6 |
| October | 19°C | 119 mm | 306 h | 7 |
| November | 20°C | 293 mm | 289 h | 7 |
| December | 19°C | 213 mm | 340 h | 5 |
About 3,511 hours of sun a year. Roughly 146 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.