Climate averages 1991–2020
Comodoro Rivadavia weather
in December.
A mild, very dry month: the 3rd warmest and the 2nd 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 Comodoro Rivadavia: daytime highs average 21.5°C and nights cool to about 12.9°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 13 mm of rain on roughly 3 days, which makes December a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 39 min on an average December day.
The nearest other city in this atlas is Trelew (338 km away). In December its highs average 27.3°C, 5.8°C warmer than Comodoro Rivadavia, with 18 mm of rain.
Among the 67 cities listed in Argentina, Comodoro Rivadavia ranks 65th of 67 for the warmest December highs and 1st of 67 for the driest December (rainfall, lowest first). The mean December high of those 67 cities is 27.9°C; Comodoro Rivadavia is 6.4°C cooler than that mean.
From December to January, average highs rise by 1.7°C to 23.2°C, and monthly rainfall falls from 13 mm to 9.6 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
Comodoro Rivadavia climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 23.2°C14.4°C | 14.4°C | 9.6 | 2.7 | 15.315 h |
| February | 22.1°C14.0°C | 14.0°C | 20 | 3.1 | 14.014 h |
| March | 20.2°C12.6°C | 12.6°C | 25 | 3.7 | 12.412 h |
| April | 16.8°C10.1°C | 10.1°C | 22 | 3.5 | 10.811 h |
| May | 12.8°C7.3°C | 7.3°C | 29 | 4.9 | 9.59 h |
| June | 9.5°C4.9°C | 4.9°C | 32 | 5.5 | 8.79 h |
| July | 9.1°C4.1°C | 4.1°C | 20 | 4.3 | 9.09 h |
| August | 11.0°C5.1°C | 5.1°C | 21 | 5.0 | 10.210 h |
| September | 13.3°C6.5°C | 6.5°C | 21 | 4.4 | 11.712 h |
| October | 16.3°C8.6°C | 8.6°C | 17 | 3.9 | 13.413 h |
| November | 19.2°C10.9°C | 10.9°C | 14 | 3.2 | 14.815 h |
| December, selected | 21.5°C12.9°C | 12.9°C | 13 | 3.0 | 15.616 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
- Trelew in DecemberArgentina · 338 kmHigh 27.3°C · Low 14.5°C · 18 mm rain
- San Carlos de Bariloche in DecemberArgentina · 608 kmHigh 17.2°C · Low 7.1°C · 47 mm rain
- Río Gallegos in DecemberArgentina · 654 kmHigh 17.2°C · Low 7.5°C · 48 mm rain
- Puerto Montt in DecemberChile · 656 kmHigh 17.2°C · Low 10.3°C · 137 mm rain
- Osorno in DecemberChile · 744 kmHigh 19.2°C · Low 9.6°C · 67 mm rain
- General Roca in DecemberArgentina · 759 kmHigh 30.2°C · Low 17.0°C · 16 mm rain
- Neuquén in DecemberArgentina · 770 kmHigh 30.0°C · Low 16.5°C · 14 mm rain
- Cipolletti in DecemberArgentina · 772 kmHigh 30.1°C · Low 16.7°C · 14 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 Comodoro Rivadavia) is explained once on the Comodoro Rivadavia year overview and on the Sources, method and limits page.