El Chaltén weather in December
December in El Chaltén: cool, soaked, with clean air — fine if you can take 21 rainy days.
#3 of 12 months in El Chaltén · #324 of 897 destinations to visit in December · comfort 78/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on El Chaltén in December
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El Chaltén climate normals — December
| Daytime high | 10°C / 51°F | 🙂 cool |
|---|---|---|
| Nighttime low | 5°C / 41°F | |
| Rainfall | 224 mm / 8.8 in | ⛈ soaked |
| Rainy days | 21 days | |
| Humidity | 77% | 💦 very humid |
| Dew point | 3°C / 37°F | |
| Sunshine | 11.7 h/day | |
| Daylight | 16.2 h | |
| Wind | 11 km/h / 7 mph | |
| Snowfall | 85.7 cm / 33.7 in | |
| Air quality (US AQI) | 17 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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El Chaltén in December — FAQ
- Is December a good time to visit El Chaltén?
- December in El Chaltén: cool, soaked, with clean air — fine if you can take 21 rainy days. It ranks #3 of 12 months for El Chaltén on SeasonMap's comfort score (78/100).
- What is the weather like in El Chaltén in December?
- In December, El Chaltén averages a daily high of 10.4°C and a low of 5.1°C, with about 223.8 mm of rain over roughly 21 rainy days.
- What is the air quality in El Chaltén in December?
- El Chaltén has a mean US Air Quality Index of about 17 in December.
- Does it snow in El Chaltén in December?
- El Chaltén sees roughly 85.7 cm of snowfall in December.