El Chaltén weather / October
El Chaltén weather in October10 years of days, one by one
The season begins. There is still snow up high and the months of strong gusts start. In town, highs are around 9°C and lows around 2°C; about 143 mm falls over 16 days with some rain, and there are 13.6 hours of daylight. At Laguna de los Tres, of 31 days usually 9 are calm, 11 windy and 11 very windy.
High / lowtown
9° / 2°
Rain16 days
143 mm
Gusts over 60 km/htown
10 days
Calm daysLaguna de los Tres
9 of 31
Daylightper day
13.6 h
October, day by day
In how many of the last 10 years each day of October was calm at Laguna de los Tres: gusts under 50 km/h and little rain from 8 am to 8 pm. Darker means more calm years.
- 13/10
- 25/10
- 33/10
- 45/10
- 54/10
- 63/10
- 72/10
- 80/10
- 90/10
- 103/10
- 111/10
- 121/10
- 133/10
- 143/10
- 154/10
- 164/10
- 171/10
- 182/10
- 193/10
- 205/10
- 213/10
- 224/10
- 236/10
- 243/10
- 253/10
- 264/10
- 271/10
- 282/10
- 292/10
- 306/10
- 314/10
There is no lucky day: the wind changes from year to year. It shows whether the month is even or gets better towards the end.
October, year by year
| Year | Calm / windy / very windy days | Fitz Roy clear | Rain | Snow days | Top gust at the lake | Warmest / coldest |
|---|---|---|---|---|---|---|
| 2025 | 6 / 14 / 11 | 2 days | 246 mm17 days | 0 | 99 km/h | 15° / -5° |
| 2024 | 8 / 14 / 9 | 1 days | 93 mm12 days | 0 | 120 km/h | 15° / -3° |
| 2023 | 16 / 7 / 8 | 5 days | 128 mm14 days | 0 | 139 km/h | 16° / -6° |
| 2022 | 7 / 8 / 16 | 3 days | 127 mm17 days | 0 | 105 km/h | 19° / -6° |
| 2021 | 4 / 8 / 19 | 3 days | 205 mm17 days | 0 | 132 km/h | 16° / -2° |
| 2020 | 6 / 10 / 15 | 7 days | 150 mm17 days | 0 | 133 km/h | 20° / -8° |
| 2019 | 10 / 11 / 10 | 9 days | 59 mm12 days | 0 | 138 km/h | 17° / -5° |
| 2018 | 12 / 14 / 5 | 11 days | 66 mm11 days | 0 | 126 km/h | 14° / -2° |
| 2017 | 7 / 11 / 13 | 4 days | 185 mm22 days | 0 | 131 km/h | 13° / 0° |
| 2016 | 17 / 9 / 5 | 12 days | 172 mm18 days | 0 | 112 km/h | 13° / -4° |
October records
- The warmest day
- 19.7° 31 October 2020
- The coldest night
- -8.1° 2 October 2020
- The strongest gust at Laguna de los Tres
- 139 km/h 25 October 2023
- The wettest day
- 58 mm 27 October 2021
From 2016 to 2025, in town except the gust.
Coming in October? A week before, the El Chaltén 7-day forecast tells you which day suits each hike and where we have spots. To plan the trip, see the best time to visit El Chaltén and what to pack.
Questions about El Chaltén weather in October
What is El Chaltén weather like in October?
In October highs in town are around 9°C and lows around 2°C. About 143 mm falls over some 16 days with rain, mostly drizzle or short showers. There are 13.6 hours of daylight. Up at Laguna de los Tres (1,170 m) it is about 5° colder.
Is El Chaltén windy in October?
In town there are about 10 days with gusts over 60 km/h. At Laguna de los Tres, from 2016 to 2025, October had on average 9 calm days (gusts under 50 km/h), 11 windy and 11 very windy ones (75 km/h or more, or heavy rain). We go out almost every day even with wind: on the day, the guide decides how far up you go.
Can you see Fitz Roy in October?
Fully clear at summit height, October had on average 6 days from 2016 to 2025. On many other days it shows for a while, through cloud. That is why it pays to have more than one day in El Chaltén and to check the mountain forecast.
Does it snow in El Chaltén in October?
In town, almost never in October. On the high trails it can snow any month, though in summer it does not last.