El Chaltén weather / August
El Chaltén weather in August11 years of days, one by one
Still winter, with snow in the forest. The days start to stretch. In town, highs are around 5°C and lows around -2°C; about 139 mm falls over 16 days with some rain, and there are 10 hours of daylight. At Laguna de los Tres, of 31 days usually 13 are calm, 9 windy and 9 very windy.
High / lowtown
5° / -2°
Rain16 days
139 mm
Gusts over 60 km/htown
7 days
Calm daysLaguna de los Tres
13 of 31
Daylightper day
10 h
August, day by day
In how many of the last 11 years each day of August 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.
- 14/11
- 23/11
- 35/11
- 45/11
- 56/11
- 64/11
- 77/11
- 83/11
- 92/11
- 106/11
- 115/11
- 126/11
- 135/11
- 145/11
- 155/11
- 166/11
- 177/11
- 187/11
- 194/11
- 206/11
- 215/11
- 225/11
- 233/11
- 245/11
- 254/11
- 264/11
- 275/11
- 283/11
- 294/11
- 305/11
- 314/11
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.
August, year by year
| Year | Calm / windy / very windy days | Fitz Roy clear | Rain | Snow days | Top gust at the lake | Warmest / coldest |
|---|---|---|---|---|---|---|
| 2026 | 24 / 5 / 2 | 10 days | 44 mm6 days | 4 | 84 km/h | 7° / -10° |
| 2025 | 21 / 6 / 4 | 10 days | 75 mm9 days | 1 | 102 km/h | 11° / -8° |
| 2024 | 19 / 8 / 4 | 10 days | 61 mm12 days | 1 | 112 km/h | 8° / -12° |
| 2023 | 14 / 6 / 11 | 5 days | 157 mm18 days | 7 | 122 km/h | 7° / -16° |
| 2022 | 10 / 10 / 11 | 2 days | 149 mm17 days | 2 | 134 km/h | 11° / -9° |
| 2021 | 12 / 9 / 10 | 2 days | 129 mm15 days | 2 | 151 km/h | 14° / -7° |
| 2020 | 7 / 11 / 13 | 3 days | 108 mm17 days | 2 | 125 km/h | 7° / -11° |
| 2019 | 14 / 7 / 10 | 8 days | 106 mm13 days | 1 | 131 km/h | 9° / -9° |
| 2018 | 6 / 13 / 12 | 2 days | 177 mm18 days | 2 | 135 km/h | 9° / -8° |
| 2017 | 6 / 13 / 12 | 2 days | 173 mm19 days | 2 | 158 km/h | 8° / -8° |
| 2016 | 15 / 7 / 9 | 7 days | 256 mm21 days | 5 | 111 km/h | 8° / -10° |
August records
- The warmest day
- 14.1° 4 August 2021
- The coldest night
- -16.3° 16 August 2023
- The strongest gust at Laguna de los Tres
- 158 km/h 20 August 2017
- The wettest day
- 61.6 mm 1 August 2021
From 2016 to 2026, in town except the gust.
Coming in August? 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 August
What is El Chaltén weather like in August?
In August highs in town are around 5°C and lows around -2°C. About 139 mm falls over some 16 days with rain, mostly drizzle or short showers. There are 10 hours of daylight. Up at Laguna de los Tres (1,170 m) it is about 5° colder.
Is El Chaltén windy in August?
In town there are about 7 days with gusts over 60 km/h. At Laguna de los Tres, from 2016 to 2026, August had on average 13 calm days (gusts under 50 km/h), 9 windy and 9 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 August?
Fully clear at summit height, August had on average 6 days from 2016 to 2026. 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 August?
Yes: in town there were on average 3 days of snow (1 cm or more) in August. There is more on the high trails.