Climate averages 1991–2020
Antofagasta weather
in December.
A mild, very dry month: the 4th warmest and the 3rd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
December is a mild month in Antofagasta: daytime highs average 21.4°C and nights cool to about 14.8°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 1.9 mm of rain on fewer than one day, which makes December a very dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 34 min on an average December day.
The nearest other city in this atlas is Calama (201 km away). In December its highs average 25.2°C, 3.8°C warmer than Antofagasta, with 1.3 mm of rain.
Among the 40 cities listed in Chile, Antofagasta ranks 30th of 40 for the warmest December highs and 8th of 40 for the driest December (rainfall, lowest first). The mean December high of those 40 cities is 23.8°C; Antofagasta is 2.4°C cooler than that mean.
From December to January, average highs rise by 1.4°C to 22.9°C, and monthly rainfall falls from 1.9 mm to 1.6 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Antofagasta climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 22.9°C16.5°C | 16.5°C | 1.6 | 0.1 | 13.413 h |
| February | 23.2°C17.0°C | 17.0°C | 1.8 | 0.5 | 12.913 h |
| March | 22.3°C16.2°C | 16.2°C | 3.5 | 0.6 | 12.212 h |
| April | 20.6°C14.7°C | 14.7°C | 8.9 | 2.8 | 11.612 h |
| May | 19.4°C13.2°C | 13.2°C | 10 | 3.9 | 11.011 h |
| June | 18.4°C11.8°C | 11.8°C | 13 | 4.0 | 10.711 h |
| July | 17.9°C11.0°C | 11.0°C | 10 | 3.7 | 10.811 h |
| August | 18.1°C11.3°C | 11.3°C | 7.5 | 2.6 | 11.311 h |
| September | 18.5°C11.7°C | 11.7°C | 5.2 | 1.8 | 11.912 h |
| October | 19.1°C12.2°C | 12.2°C | 4.5 | 0.9 | 12.613 h |
| November | 20.0°C13.2°C | 13.2°C | 3.5 | 0.7 | 13.213 h |
| December, selected | 21.4°C14.8°C | 14.8°C | 1.9 | 0.2 | 13.614 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Calama in DecemberChile · 201 kmHigh 25.2°C · Low 7.5°C · 1.3 mm rain
- Alto Hospicio in DecemberChile · 377 kmHigh 23.2°C · Low 15.0°C · 0.9 mm rain
- Iquique (approximate) in DecemberChile · 383 kmHigh 25.8°C · Low 18.3°C · 0.6 mm rain
- Copiapó in DecemberChile · 413 kmHigh 28.6°C · Low 17.0°C · 0.5 mm rain
- Arica in DecemberChile · 576 kmHigh 24.7°C · Low 17.2°C · 4.7 mm rain
- San Ramón de la Nueva Orán in DecemberArgentina · 622 kmHigh 30.5°C · Low 21.2°C · 193 mm rain
- Tacna in DecemberPeru · 627 kmHigh 25.3°C · Low 16.3°C · 5.6 mm rain
- Tarija in DecemberBolivia · 628 kmHigh 22.9°C · Low 14.2°C · 194 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Antofagasta) is explained once on the Antofagasta year overview and on the Sources, method and limits page.