Chaitén Weather in December
What's the weather like in Chaitén (Los Lagos) in December 2025?
The climate in Chaitén during December can be summarized as mild and wet.
December is in the summer in Chaitén and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 17°C (63°F), whilst at night 9°C (48°F) is normal.
| Daytime temperature | 17.2°C 63°F |
|---|---|
| Nightly temperature | 9°C 48.2°F |
| Average temperature | 13.1°C 55.6°F |
| Daily sunshine | 10.1 hrs |
| Avg rainfall | 124 mm 4.9 ins |
| Rainy days | 3 days |
| Sea temperature | 13.8°C 56.9°F |
| Humidity | 73% |
| Windspeed | 23.8kph 15 mph |
On average December is the 5th driest month of the year in Chaitén with around 124mm 4.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 3 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.1 hours of sunshine per day.
December temperatures in Chaitén
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Chaitén in December 2025.
Other monthly averages
Best places to visit in December
Chaitén weather stats
| Hottest month: | January | 18.2°C 64.8°F |
|---|---|---|
| Driest month: | February | 97mm 3.8ins |
| Sunniest month: | February | 9.8hrs |
| Coldest month: | July | 8.3°C 46.9°F |
| Wettest month: | July | 290mm 11.4ins |
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