Climate averages 1991–2020
San Carlos de Bariloche weather
in December.
A mild, moderately wet month: the 3rd warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a mild month in San Carlos de Bariloche: daytime highs average 17.2°C and nights cool to about 7.1°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 47 mm of rain on roughly 7 days, which makes December a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 04 min on an average December day.
The nearest other city in this atlas is Puerto Montt (141 km away). In December its highs average 17.2°C, about as warm as San Carlos de Bariloche, with 137 mm of rain.
Among the 67 cities listed in Argentina, San Carlos de Bariloche ranks joint 66th of 67 for the warmest December highs and 9th of 67 for the driest December (rainfall, lowest first). The mean December high of those 67 cities is 27.9°C; San Carlos de Bariloche is 10.7°C cooler than that mean.
From December to January, average highs rise by 2.7°C to 19.9°C, and monthly rainfall falls from 47 mm to 31 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
San Carlos de Bariloche climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 19.9°C9.2°C | 9.2°C | 31 | 5.2 | 14.815 h |
| February | 19.9°C9.7°C | 9.7°C | 33 | 5.0 | 13.714 h |
| March | 17.1°C8.2°C | 8.2°C | 41 | 7.0 | 12.412 h |
| April | 12.0°C5.1°C | 5.1°C | 74 | 8.7 | 11.011 h |
| May | 7.9°C2.8°C | 2.8°C | 119 | 12.9 | 9.910 h |
| June | 4.5°C0.6°C | 0.6°C | 172 | 16.0 | 9.39 h |
| July | 3.8°C-0.6°C | -0.6°C | 140 | 14.5 | 9.510 h |
| August | 4.9°C-0.1°C | -0.1°C | 131 | 14.5 | 10.510 h |
| September | 7.2°C0.8°C | 0.8°C | 68 | 10.3 | 11.812 h |
| October | 10.4°C2.5°C | 2.5°C | 70 | 10.2 | 13.213 h |
| November | 13.9°C4.6°C | 4.6°C | 52 | 8.3 | 14.414 h |
| December, selected | 17.2°C7.1°C | 7.1°C | 47 | 6.8 | 15.115 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
- Puerto Montt in DecemberChile · 141 kmHigh 17.2°C · Low 10.3°C · 137 mm rain
- Osorno in DecemberChile · 166 kmHigh 19.2°C · Low 9.6°C · 67 mm rain
- Valdivia in DecemberChile · 221 kmHigh 19.3°C · Low 11.0°C · 70 mm rain
- Padre Las Casas in DecemberChile · 287 kmHigh 20.7°C · Low 9.3°C · 59 mm rain
- Temuco in DecemberChile · 290 kmHigh 21.2°C · Low 9.6°C · 59 mm rain
- Neuquén in DecemberArgentina · 369 kmHigh 30.0°C · Low 16.5°C · 14 mm rain
- Cipolletti in DecemberArgentina · 374 kmHigh 30.1°C · Low 16.7°C · 14 mm rain
- General Roca in DecemberArgentina · 394 kmHigh 30.2°C · Low 17.0°C · 16 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 San Carlos de Bariloche) is explained once on the San Carlos de Bariloche year overview and on the Sources, method and limits page.