SeasonMapPortillo weather in December
Chile
December in Portillo: cool, dry — not the best time to visit.
#9 of 12 months in Portillo · #1350 of 1383 destinations to visit in December · comfort 27/100 (tier F)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Portillo in December
No notes yet. Open Portillo on the map to add the first one.
Portillo climate normals — December
| Daytime high | 15°C / 59°F | 🙂 cool |
|---|---|---|
| Nighttime low | 6°C / 42°F | |
| Feels like (high) | 15°C / 59°F | |
| Rainfall | 28 mm / 1.1 in | ☀️ dry |
| Rainy days | 6 days | |
| Humidity | 58% | 🍃 comfortable |
| Dew point | 2°C / 35°F | |
| Sunshine | 13.1 h/day | |
| Daylight | 14.3 h | |
| Wind | 10 km/h / 6 mph | |
| Snowfall | 6.3 cm / 2.5 in | |
| Air quality (US AQI) | 57 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Portillo in December
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Quiettravelers describe it as quiet, Summer holidays in Chile, school holidays in 3 of the markets that fill it
Sourced from traveler notes: “…ort in July and August, and the hotel itself closes for the off-season. Storms can arrive anywhere from late June to late Septembe…” — AndesValparaisoRegular
Peak crowdsBusyShoulder seasonQuiet
Best months for Portillo's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherPortillo's weather peaks June–August.
Best weatherFair weatherToughest weather
What's on in Portillo in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Closed out of season
15 Oct – 10 Jun · usuallyOff-season shutdownClosuresThere is no summer operation: the hotel shuts, the road is just the road to Mendoza and there is nothing at the lake but the lake. Come for snow or not at all.
Nearby, and something's on
Within 300 km of Portillo — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Portillo?
Portillo in December — FAQ
- Is December a good time to visit Portillo?
- December in Portillo: cool, dry — not the best time to visit. It ranks #9 of 12 months for Portillo on SeasonMap's comfort score (27/100).
- What is the weather like in Portillo in December?
- In December, Portillo averages a daily high of 14.9°C and a low of 5.6°C, with about 27.9 mm of rain over roughly 6.3 rainy days.
- What is the air quality in Portillo in December?
- Portillo has a mean US Air Quality Index of about 57 in December.
- Does it snow in Portillo in December?
- Portillo sees roughly 6.3 cm of snowfall in December.
Other months in Portillo
Compare Portillo in December
Warmer or cooler than Portillo in December
Similar destinations in South America — December
Within 300 km: Santiago's High Andes routes open around 1 Dec – 31 Mar, and Valle Nevado's Closed for the summer around 20 Oct – 10 Jun.