Climate averages 1991–2020
Calama weather
in July.
A mild, very dry month: the coolest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a mild month in Calama: daytime highs average 20.3°C and nights cool to about 1.3°C. By daytime temperature it is the coolest month of the year.
Expect about 3.3 mm of rain on fewer than one day, which makes July a very dry month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 54 min on an average July day.
The nearest other city in this atlas is Antofagasta (201 km away). In July its highs average 17.9°C, 2.4°C cooler than Calama, with 10 mm of rain.
Among the 40 cities listed in Chile, Calama ranks 3rd of 40 for the warmest July highs and 2nd of 40 for the driest July (rainfall, lowest first). The mean July high of those 40 cities is 14.5°C; Calama is 5.9°C warmer than that mean.
From July to August, average highs rise by 1.6°C to 21.9°C, and monthly rainfall falls from 3.3 mm to 2.5 mm.
The annual picture
July 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
Calama climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.8°C9.5°C | 9.5°C | 8.7 | 2.3 | 13.313 h |
| February | 24.6°C9.4°C | 9.4°C | 11 | 2.7 | 12.913 h |
| March | 24.5°C7.7°C | 7.7°C | 5.6 | 1.0 | 12.212 h |
| April | 23.6°C5.0°C | 5.0°C | 2.0 | 0.3 | 11.612 h |
| May | 21.8°C2.8°C | 2.8°C | 4.5 | 0.5 | 11.111 h |
| June | 20.6°C1.6°C | 1.6°C | 3.5 | 0.3 | 10.811 h |
| July, selected | 20.3°C1.3°C | 1.3°C | 3.3 | 0.6 | 10.911 h |
| August | 21.9°C2.0°C | 2.0°C | 2.5 | 0.4 | 11.311 h |
| September | 23.3°C3.3°C | 3.3°C | 0.6 | 0.2 | 11.912 h |
| October | 24.5°C4.9°C | 4.9°C | 0.1 | 0.1 | 12.613 h |
| November | 25.0°C5.8°C | 5.8°C | 0.1 | 0.0 | 13.213 h |
| December | 25.2°C7.5°C | 7.5°C | 1.3 | 0.3 | 13.513 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
July in nearby cities
- Antofagasta in JulyChile · 201 kmHigh 17.9°C · Low 11.0°C · 10 mm rain
- Alto Hospicio in JulyChile · 272 kmHigh 19.2°C · Low 9.8°C · 0.5 mm rain
- Iquique (approximate) in JulyChile · 280 kmHigh 21.9°C · Low 13.0°C · 16 mm rain
- Tarija in JulyBolivia · 444 kmHigh 19.1°C · Low 4.2°C · 8.5 mm rain
- Potosí in JulyBolivia · 459 kmHigh 13.3°C · Low -3.2°C · 4.0 mm rain
- Arica in JulyChile · 465 kmHigh 17.1°C · Low 12.5°C · 29 mm rain
- San Ramón de la Nueva Orán in JulyArgentina · 477 kmHigh 20.8°C · Low 10.6°C · 9.2 mm rain
- Tacna in JulyPeru · 513 kmHigh 18.9°C · Low 13.0°C · 3.9 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 Calama) is explained once on the Calama year overview and on the Sources, method and limits page.