September · Chile
Best time to visit Portillo in September Weather, crowds & prices
Weather in Portillo in September
Average temperature -4°C, 7 mm of rain, about 18 days with 6+ hours of sunshine and 45% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
7.1/10
Ranked #4 of 12 months
- Avg temp
- -4°C
- Rainfall
- 7 mm
- Humidity
- 45%
- Days with 6h+ sun
- 18
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Portillo scores 7.1/10 for snow and ski travel - an above-average month (#4 of 12). Expect around -4°C, 7 mm of rain, and roughly 18 days with 6+ hours of sunshine this month.
Legendary Andean ski resort overlooking the turquoise Laguna del Inca.
September in Portillo: strong conditions, 4th of 12
At -4°C (24°F) this is proper winter weather in September: layer up and split the day between outdoor highlights and indoor stops.
Only 7 mm of water-equivalent precipitation is expected (snow at altitude), leaving about 18 days with 6+ hours of sunshine and 11.8 hours of daylight.
That is 7.1/10 on the same scale — 4th of 12 months, versus 8.6/10 for the best month here.
Pack insulated layers, a windproof shell, gloves and boots with grip, goggles and a helmet if you are not renting.
Expect mid-season pricing, and crowds are moderate.
If your dates are flexible, June is materially better in Portillo — 1.5 points higher on the same scale.
Frequently asked
- What is the weather like in Portillo in September?
- In September, Portillo averages -4°C, 7 mm of rain, and about 18 days with 6+ hours of sunshine. Its climate-comfort score is 7.1/10.
- Is September a good time to visit Portillo?
- September earns a 7.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Portillo in September?
- Expect about 7 mm of rain in September. Average humidity is 45% and there are about 18 days with 6+ hours of sunshine.
Curated in Portillo
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Portillo, Chile. Live activities and tours from GetYourGuide, matched to this destination.