La Unión Weather in December
What's the weather like in La Unión (Los Lagos) in December 2025?
The climate in La Unión during December can be summarized as mild and reasonably dry.
December is in the summer in La Unión and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 19°C (67°F), whilst at night 9°C (48°F) is normal.
| Daytime temperature | 19.4°C 66.8°F |
|---|---|
| Nightly temperature | 8.7°C 47.6°F |
| Average temperature | 14°C 57.2°F |
| Daily sunshine | 11.3 hrs |
| Avg rainfall | 59 mm 2.3 ins |
| Rainy days | 3 days |
| Sea temperature | 14.5°C 58.1°F |
| Humidity | 74% |
| Windspeed | 18.4kph 11 mph |
On average December is the 3rd driest month of the year in La Unión with around 59mm 2.3 inches of rain making it a reasonably dry 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 11.3 hours of sunshine per day.
December temperatures in La Unión
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 La Unión in December 2025.
Other monthly averages
Best places to visit in December
La Unión weather stats
| Hottest month: | January | 20.5°C 68.9°F |
|---|---|---|
| Driest month: | January | 45mm 1.8ins |
| Sunniest month: | February | 10.5hrs |
| Coldest month: | July | 9.5°C 49.1°F |
| Wettest month: | June | 240mm 9.4ins |
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