September · Chile
Best time to visit Chaitén in September Weather, crowds & prices
Weather in Chaitén in September
Average temperature 3°C, 117 mm of rain, about 5 days with 6+ hours of sunshine and 90% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
4.2/10
Ranked #8 of 12 months
- Avg temp
- 3°C
- Rainfall
- 117 mm
- Humidity
- 90%
- Days with 6h+ sun
- 5
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Chaitén scores 4.2/10 for nature and wildlife travel - ranked #8 of 12. Expect around 3°C, 117 mm of rain, and roughly 5 days with 6+ hours of sunshine this month.
Chaitén rebuilt after a 2008 eruption-ferry gateway to Pumalín parks and northern Patagonia fjords. Best window: November through March in the Southern Hemisphere.
September in Chaitén — off-season conditions
September averages 3°C (38°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
At 117 mm this is a genuinely wet month: about 5 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 4.2/10 here, 8th of 12 months, against 9.8/10 in the destination's best month.
Pack insulated layers, a windproof shell, gloves and boots with grip, a proper rain shell rather than an umbrella, footwear you can get muddy.
Figure on low-season pricing, with crowds are light for this destination.
Flexible dates? February scores 5.6 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Chaitén in September?
- In September, Chaitén averages 3°C, 117 mm of rain, and about 5 days with 6+ hours of sunshine. Its climate-comfort score is 4.2/10.
- Is September a good time to visit Chaitén?
- September earns a 4.2/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Chaitén in September?
- Expect about 117 mm of rain in September. Average humidity is 90% and there are about 5 days with 6+ hours of sunshine.
Curated in Chaitén
Tickets & experiences
Things to do in Chaitén
Chaitén, Chile. Live activities and tours from GetYourGuide, matched to this destination.