Climate averages 1991–2020
Catamarca weather
by month.
See how the year changes. December has the highest average daily maximum; July has the lowest average monthly rainfall.
Pleasant-weather months by our simple rule: MayAugustSeptember
Long-term climate patterns, not a forecast for a particular trip.
Across the year Catamarca averages a daytime high of 24.1°C and a nighttime low of 14.1°C, with about 871 mm of rain on roughly 114 days. December is the warmest month (average high 29.3°C) and July the coolest (17.4°C). January is the wettest month with 167 mm; July is the driest with 15 mm.
Months with pleasant weather by a simple rule (average high between 18°C and 29°C, average low of at least 5°C and at most 8 rain days): May, August and September. This looks at temperature and rain only, not humidity, wind, sea temperature or crowds.
The annual picture
A year in Catamarca
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
Catamarca climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.2°C20.9°C | 20.9°C | 167 | 16.7 | 13.714 h |
| February | 28.0°C19.9°C | 19.9°C | 118 | 13.8 | 13.113 h |
| March | 26.0°C17.9°C | 17.9°C | 109 | 13.1 | 12.312 h |
| April | 22.7°C13.8°C | 13.8°C | 65 | 9.7 | 11.411 h |
| May | 19.4°C9.6°C | 9.6°C | 37 | 6.9 | 10.711 h |
| June | 17.6°C6.3°C | 6.3°C | 20 | 4.1 | 10.410 h |
| July | 17.4°C5.5°C | 5.5°C | 15 | 3.3 | 10.511 h |
| August | 21.3°C8.7°C | 8.7°C | 17 | 3.3 | 11.111 h |
| September | 24.2°C12.3°C | 12.3°C | 32 | 5.4 | 11.912 h |
| October | 26.6°C15.9°C | 15.9°C | 65 | 10.0 | 12.813 h |
| November | 28.0°C18.3°C | 18.3°C | 98 | 12.8 | 13.514 h |
| December | 29.3°C20.3°C | 20.3°C | 129 | 15.4 | 13.914 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
Nearby cities
- Santiago del EsteroArgentina · 167 kmHigh 27.0°C · Low 17.3°C · 817 mm rain a year
- CórdobaArgentina · 361 kmHigh 22.9°C · Low 12.4°C · 889 mm rain a year
- San Juan, ArgentinaArgentina · 431 kmHigh 24.1°C · Low 11.4°C · 192 mm rain a year
- RawsonArgentina · 436 kmHigh 23.7°C · Low 10.8°C · 192 mm rain a year
- CopiapóChile · 463 kmHigh 26.4°C · Low 14.7°C · 32 mm rain a year
- Villa MaríaArgentina · 501 kmHigh 22.9°C · Low 13.6°C · 896 mm rain a year
- RafaelaArgentina · 517 kmHigh 23.6°C · Low 14.1°C · 1,110 mm rain a year
- Río CuartoArgentina · 536 kmHigh 22.3°C · Low 12.3°C · 738 mm rain a year
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 limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC-3, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at -28.50°, -65.80° (4 km from the city centre). Rain comes from the 0.25° cell at -28.50°, -65.75°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.