Monthly climate guide
Puerto Montt weather in December
With highs near 18°C (64°F) and lows around 9°C (49°F), December feels mild in Puerto Montt. Rainfall averages about 58 mm (some rain) and the sky is often cloudy. Daytime highs are 2°C warmer than November and 2°C cooler than January.
What stands out in December
- Seasonally, December counts as early summer in Puerto Montt — the seasons are reversed south of the equator.
- Puerto Montt is usually about 2°C warmer than Castro, 130 km away, in December.
- It's one of the drier months, with about 42% less rain than Puerto Montt's average.
Avg high
18°C
64°F
Avg low
9°C
49°F
Rainfall
58 mm
some rain
Humidity
81%
relative
Sky
61%
cloud · often cloudy
Puerto Montt weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 20°C / 68°F | 10°C / 50°F | 44 mm | 81% | 50% |
| February | 20°C / 69°F | 10°C / 51°F | 53 mm | 80% | 51% |
| March | 19°C / 65°F | 9°C / 49°F | 71 mm | 81% | 57% |
| April | 16°C / 60°F | 8°C / 46°F | 104 mm | 85% | 67% |
| May | 13°C / 55°F | 7°C / 45°F | 145 mm | 89% | 78% |
| June | 10°C / 50°F | 5°C / 41°F | 176 mm | 91% | 77% |
| July | 10°C / 49°F | 4°C / 40°F | 159 mm | 91% | 78% |
| August | 11°C / 51°F | 5°C / 41°F | 158 mm | 90% | 80% |
| September | 12°C / 54°F | 5°C / 41°F | 87 mm | 87% | 73% |
| October | 14°C / 57°F | 6°C / 43°F | 78 mm | 85% | 71% |
| November | 16°C / 61°F | 8°C / 46°F | 59 mm | 83% | 68% |
| December | 18°C / 64°F | 9°C / 49°F | 58 mm | 81% | 61% |
What to pack for December
- A warm sweater or fleece for layering
- A mid-weight jacket
- A small travel umbrella, just in case
Is December a good time to visit Puerto Montt?
Compare the months in the chart above to find your ideal window.
Best time to visit Puerto Montt →Other Chile cities in December
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Puerto Montt weather in December. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/chile/puerto-montt/december
<a href="https://weathercompare.eu/weather/chile/puerto-montt/december">Puerto Montt weather in December</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/chile/puerto-montt" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Puerto Montt weather in December"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/chile/puerto-montt/december">Puerto Montt weather in December</a> – WeatherCompare</p>
Puerto Montt in December: quick answers
Is December a good time to visit Puerto Montt?
December is a reasonable time for Puerto Montt: highs around 18°C and about 58 mm of rain, though not one of the three best months.
How warm is Puerto Montt in December?
Average highs are about 18°C (64°F) and average lows about 9°C (49°F), based on 10 years of daily data.
Does it rain a lot in Puerto Montt in December?
Puerto Montt typically gets around 58 mm of rain in December — some rain.
Figures are long-term averages for the area around Puerto Montt (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.