SeasonMapPortillo weather in August
Chile
August in Portillo: freezing, a little rain, with clean air — one of the best months to visit.
#2 of 12 months in Portillo · #333 of 1383 destinations to visit in August · comfort 88/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Portillo in August
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Portillo climate normals — August
| Daytime high | 2°C / 35°F | 🥶 freezing |
|---|---|---|
| Nighttime low | -4°C / 24°F | |
| Feels like (high) | -1°C / 30°F | |
| Rainfall | 74 mm / 2.9 in | 🌦 some rain |
| Rainy days | 8 days | |
| Humidity | 49% | 🍃 comfortable |
| Dew point | -13°C / 9°F | |
| Sunshine | 9.2 h/day | |
| Daylight | 11 h | |
| Wind | 7 km/h / 4 mph | |
| Snowfall | 53.3 cm / 21 in | |
| Air quality (US AQI) | 40 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Portillo in August
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.
BusyJuly peak weeks(estimated)
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).
Best weatherPortillo's weather peaks June–August.
Best weatherFair weatherToughest weather
What's on in Portillo in August
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Closure
Access road shut by storms
1 Jun – 30 Sep · usuallyRiskThe hotel sits on the international road to Argentina and the pass closes whenever a big front arrives; 2026 saw it shut for 34 days. Guests already up there ski; getting in or out waits. Source ↗
- Season
Ski season
20 Jun – 5 Oct · usuallyA single hotel at 2,880 metres on a lake, open from late June to the start of October and shut the rest of the year. Late season can run into October when the snow holds.
- Rule
Saturday-to-Saturday ski weeks
20 Jun – 5 Oct · usuallyBook earlyThe hotel sells all-inclusive weeks, not nights: everyone arrives on Saturday and leaves the next, which is why the place feels like a boarding house. Shorter stays are the exception, not the rule. Source ↗
- Season
July peak weeks
10 Jul – 10 Aug · usuallySchool holidaysCrowdedBook earlyThe Chilean and Argentine school breaks fall inside the best snow of the season, which makes the middle of July to early August the dearest and the first weeks to sell out.
- Season
Snow season
Ski seasonAbout 53 cm of snow falls in the month.
from the climate normals
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 August — FAQ
- Is August a good time to visit Portillo?
- August in Portillo: freezing, a little rain, with clean air — one of the best months to visit. It ranks #2 of 12 months for Portillo on SeasonMap's comfort score (88/100).
- What is the weather like in Portillo in August?
- In August, Portillo averages a daily high of 1.6°C and a low of -4.4°C, with about 74.2 mm of rain over roughly 7.8 rainy days.
- What is the air quality in Portillo in August?
- Portillo has a mean US Air Quality Index of about 40 in August.
- Does it snow in Portillo in August?
- Portillo sees roughly 53.3 cm of snowfall in August.
Other months in Portillo
Compare Portillo in August
Warmer or cooler than Portillo in August
Similar destinations in South America — August
Within 300 km: Valle Nevado's Ski season around 19 Jun – 5 Oct, and Santiago's Ski season around 14 Jun – 4 Oct.