Antofagasta weather by month
Antofagasta runs from about 14°C in July to 22°C in February, with April the wettest month at 2 mm.
warmest month
February
22°C
coolest month
July
14°C
wettest month
April
2 mm
worst air month
July
13 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 21°C | 0 mm | 392 h | 9 |
| February | 22°C | 0 mm | 337 h | 9 |
| March | 20°C | 0 mm | 359 h | 10 |
| April | 18°C | 2 mm | 318 h | 12 |
| May | 15°C | 0 mm | 314 h | 12 |
| June | 15°C | 0 mm | 293 h | 11 |
| July | 14°C | 0 mm | 297 h | 13 |
| August | 14°C | 0 mm | 314 h | 12 |
| September | 15°C | 1 mm | 304 h | 12 |
| October | 16°C | 0 mm | 363 h | 12 |
| November | 17°C | 0 mm | 366 h | 10 |
| December | 18°C | 0 mm | 396 h | 9 |
About 4,053 hours of sun a year. Roughly 0 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.