Climate averages 1991–2020
Puerto Montt weather
in December.
A mild, 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 Puerto Montt: daytime highs average 17.2°C and nights cool to about 10.3°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 137 mm of rain on roughly 14 days, which makes December a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 06 min on an average December day.
The nearest other city in this atlas is Osorno (101 km away). In December its highs average 19.2°C, 2.0°C warmer than Puerto Montt, with 67 mm of rain.
Among the 40 cities listed in Chile, Puerto Montt ranks 39th of 40 for the warmest December highs and 40th of 40 for the driest December (rainfall, lowest first). The mean December high of those 40 cities is 23.8°C; Puerto Montt is 6.6°C cooler than that mean.
From December to January, average highs rise by 1.4°C to 18.6°C, and monthly rainfall falls from 137 mm to 101 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
Puerto Montt climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 18.6°C11.7°C | 11.7°C | 101 | 11.2 | 14.815 h |
| February | 18.8°C11.9°C | 11.9°C | 100 | 9.4 | 13.714 h |
| March | 17.3°C10.9°C | 10.9°C | 132 | 12.2 | 12.412 h |
| April | 14.6°C9.0°C | 9.0°C | 184 | 15.5 | 11.011 h |
| May | 12.5°C7.6°C | 7.6°C | 261 | 18.2 | 9.810 h |
| June | 10.2°C5.8°C | 5.8°C | 311 | 20.8 | 9.29 h |
| July | 9.6°C4.7°C | 4.7°C | 276 | 20.1 | 9.59 h |
| August | 10.4°C4.9°C | 4.9°C | 277 | 20.6 | 10.510 h |
| September | 12.0°C5.5°C | 5.5°C | 185 | 17.4 | 11.812 h |
| October | 13.7°C7.0°C | 7.0°C | 180 | 17.5 | 13.213 h |
| November | 15.3°C8.6°C | 8.6°C | 151 | 15.4 | 14.414 h |
| December, selected | 17.2°C10.3°C | 10.3°C | 137 | 13.7 | 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
- Osorno in DecemberChile · 101 kmHigh 19.2°C · Low 9.6°C · 67 mm rain
- San Carlos de Bariloche in DecemberArgentina · 141 kmHigh 17.2°C · Low 7.1°C · 47 mm rain
- Valdivia in DecemberChile · 186 kmHigh 19.3°C · Low 11.0°C · 70 mm rain
- Padre Las Casas in DecemberChile · 303 kmHigh 20.7°C · Low 9.3°C · 59 mm rain
- Temuco in DecemberChile · 305 kmHigh 21.2°C · Low 9.6°C · 59 mm rain
- Los Ángeles in DecemberChile · 448 kmHigh 24.2°C · Low 11.2°C · 30 mm rain
- Villa Mercedes, Chile in DecemberChile · 460 kmHigh 22.5°C · Low 10.3°C · 52 mm rain
- Coronel in DecemberChile · 493 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 Puerto Montt) is explained once on the Puerto Montt year overview and on the Sources, method and limits page.