Climate averages 1991–2020
Osorno weather
in December.
A mild, moderately wet month: the 4th 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 Osorno: daytime highs average 19.2°C and nights cool to about 9.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 67 mm of rain on roughly 8 days, which makes December a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 01 min on an average December day.
The nearest other city in this atlas is Valdivia (85 km away). In December its highs average 19.3°C, about as warm as Osorno, with 70 mm of rain.
Among the 40 cities listed in Chile, Osorno ranks 38th of 40 for the warmest December highs and 37th of 40 for the driest December (rainfall, lowest first). The mean December high of those 40 cities is 23.8°C; Osorno is 4.6°C cooler than that mean.
From December to January, average highs rise by 2.3°C to 21.5°C, and monthly rainfall falls from 67 mm to 39 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
Osorno climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 21.5°C11.0°C | 11.0°C | 39 | 6.2 | 14.715 h |
| February | 22.0°C11.1°C | 11.1°C | 42 | 5.3 | 13.714 h |
| March | 19.6°C9.7°C | 9.7°C | 65 | 8.5 | 12.412 h |
| April | 15.9°C7.4°C | 7.4°C | 114 | 11.6 | 11.011 h |
| May | 13.2°C6.1°C | 6.1°C | 194 | 15.4 | 9.910 h |
| June | 10.7°C4.5°C | 4.5°C | 251 | 18.8 | 9.39 h |
| July | 10.3°C3.4°C | 3.4°C | 231 | 17.9 | 9.610 h |
| August | 11.2°C3.8°C | 3.8°C | 213 | 18.6 | 10.511 h |
| September | 12.9°C4.5°C | 4.5°C | 129 | 14.0 | 11.812 h |
| October | 14.7°C5.9°C | 5.9°C | 114 | 13.6 | 13.113 h |
| November | 16.7°C7.7°C | 7.7°C | 77 | 10.6 | 14.414 h |
| December, selected | 19.2°C9.6°C | 9.6°C | 67 | 8.2 | 15.015 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
- Valdivia in DecemberChile · 85 kmHigh 19.3°C · Low 11.0°C · 70 mm rain
- Puerto Montt in DecemberChile · 101 kmHigh 17.2°C · Low 10.3°C · 137 mm rain
- San Carlos de Bariloche in DecemberArgentina · 166 kmHigh 17.2°C · Low 7.1°C · 47 mm rain
- Padre Las Casas in DecemberChile · 207 kmHigh 20.7°C · Low 9.3°C · 59 mm rain
- Temuco in DecemberChile · 209 kmHigh 21.2°C · Low 9.6°C · 59 mm rain
- Los Ángeles in DecemberChile · 352 kmHigh 24.2°C · Low 11.2°C · 30 mm rain
- Villa Mercedes, Chile in DecemberChile · 366 kmHigh 22.5°C · Low 10.3°C · 52 mm rain
- Coronel in DecemberChile · 394 kmHigh 22.2°C · Low 12.6°C · 21 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 Osorno) is explained once on the Osorno year overview and on the Sources, method and limits page.