| Rank | Month | Daily peak gust | Days over 60 km/h | Days over 100 km/h a month | Daylight |
|---|---|---|---|---|---|
| 1 | January | 67 km/h | 17 of 30 | 3.8 | 15.7 h |
| 2 | December | 64 km/h | 16 of 30 | 3.1 | 16.2 h |
| 3 | February | 63 km/h | 17 of 30 | 2.8 | 14.2 h |
| 4 | November | 63 km/h | 17 of 30 | 2.6 | 15.3 h |
| 5 | March | 63 km/h | 16 of 30 | 2.7 | 12.4 h |
| 6 | October | 62 km/h | 16 of 30 | 3.5 | 13.6 h |
| 7 | April | 60 km/h | 14 of 30 | 3.1 | 10.6 h |
| 8 | September | 58 km/h | 14 of 30 | 3.1 | 11.8 h |
| 9 | August | 56 km/h | 13 of 30 | 3.1 | 10.0 h |
| 10 | June | 53 km/h | 11 of 30 | 1.4 | 8.2 h |
| 11 | July | 52 km/h | 11 of 30 | 2.9 | 8.6 h |
| 12 | May | 50 km/h | 10 of 30 | 1.7 | 9.0 h |
Average 2016 to 2025 at 1,170 m (Copernicus ERA5 reanalysis via Open-Meteo). Peak gust between 8 am and 8 pm.
What the table says
January is the windiest month: the daily peak gust averages 67 km/h and 56 % of days pass 60. December and February follow. At the other end, May averages 50 km/h and has 13 days in 30 under 40 km/h up high. It is Patagonia’s paradox: the months with most daylight and most people are the windiest, and the calm months are the short-day ones.
Which month to choose for hiking
- March and April
- The best balance: less wind than midsummer, still 11 to 13 hours of daylight, the lenga forest red in April and fewer people on the trails.
- November and December
- The windiest, but with 15 to 16 hours of daylight and snow still on the summits: the good days are spectacular, and there is time to wait for one.
- January and February
- Full summer: warm, long and windy. It is when we run most outings, because stays are longer and the day always comes.
- May to September
- The calmest, with snow in town and few services open. Laguna Torre and Capri are walkable; the Tres moraine depends on the snow.
| Month | High / low | Daylight | Very windy days |
|---|---|---|---|
| Jan | 15° / 7° | 15.7 h | 10 |
| Feb | 16° / 7° | 14.2 h | 8 |
| Mar | 13° / 6° | 12.4 h | 8 |
| Apr | 10° / 3° | 10.6 h | 6 |
| May | 7° / 0° | 9 h | 4 |
| Jun | 4° / -2° | 8.2 h | 4 |
| Jul | 3° / -3° | 8.6 h | 6 |
| Aug | 5° / -2° | 10 h | 7 |
| Sep | 7° / -1° | 11.8 h | 7 |
| Oct | 9° / 2° | 13.6 h | 10 |
| Nov | 12° / 4° | 15.3 h | 11 |
| Dec | 14° / 6° | 16.2 h | 10 |
Average 2016 to 2025 for the town (ERA5 reanalysis, Copernicus). Very windy: days with gusts over 60 km/h. Grey rows: the Park’s winter. Tap a month to see it day by day.
Every month has its own page with the weather day by day and year by year: Read more →
The live wind map, the wind on the trail right now and the full guide to the Patagonian wind: Read more →
Questions
What is the windiest month in El Chaltén?
January, with 67 km/h average daily peak gust at the height of Laguna de los Tres and 56 % of days above 60 km/h.
What is the least windy month?
May: 50 km/h on average. But it is winter: snow in town and many services closed. Among the season months, the calmest is April.
Is it better to come in January or March?
If you can choose, March: less wind, fewer people and autumn starting. January has more daylight and warmth, but also more wind and full trails.
Is it windy in winter?
Less so. In May and July a third of days pass 60 km/h up high, against more than half in summer. Winter southerly gales bring snow.