Early spring · Weather & things to do
El Chaltén in September
El Chaltén sees its driest month, with just 4.6 in (116 mm) of rain, highs of 41°F (5°C) and lows of 32°F (0°C).
Our comfort score puts it mid-table at 40/100, 8th of 12.
- Avg high
- 41°F (5°C)
- Avg low
- 32°F (0°C)
- Rain
- 4.6 in (116 mm)
- Humidity
- 88%
- Cloud cover
- 68%
- Daylight
- ~11 h 39 min
- Comfort score
- 40/100 · Tough
What September feels like
Afternoons only reach about 41°F (5°C), so plan on a warm jacket.
Nights drop below freezing, with an average low of 32°F (0°C), so expect frost and ice.
Showers are part of the month, adding up to about 4.6 in (116 mm).
It's breezy, with average winds near 12 mph (5.3 m/s) at ground level.
Plan around September
September sits mid-table; the best months are February.
- Last month with freezing nights on average; by October, lows rise to 35°F.
- Comfort improves from 36/100 in August to 40/100.
- Our Patagonia Peaks route recommends Nov – Mar, so September falls outside its suggested window.
What to pack for September
- Insulated jackethighs only 41°F
- Hat, gloves and thermal base layerslows around 32°F
- Shoes with gripfrost and ice are possible
- Packable rain jacket or umbrellaabout 4.6 in of rain
- Windproof shellaverage wind 12 mph
- Comfortable walking shoesmost picks involve some walking
What to do in El Chaltén in September
A mixed month: these picks balance outdoor stops with indoor fallbacks.
Laguna de los Tres
Classic day hike to the glacial lake at the foot of Monte Fitz Roy.
Chorrillo del Salto
Easy walk to a waterfall in the forest north of town.
La Cervecería
Small brewpub serving house beers and hearty locro after a hike.
Viedma Glacier ice trek
Boat across Lago Viedma and crampon walk on the glacier.
La Tapera
Cozy restaurant for lamb, trout and steak.
Nearby in September
- Torres del Paine in September~114 mi · highs 28°F, 4.7 in rain or snow · 8°C (14°F) cooler by day, about as wet
- Puerto Natales in September~166 mi · highs 46°F, 3.0 in rain · 2°C (4°F) warmer by day, drier
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~1,089 m to El Chaltén's ~399 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
El Chaltén in September: quick answers
Is September a good time to visit El Chaltén?
It's middling, scoring 40/100. The best months are February, at up to 57. Expect highs of 41°F (5°C) and 4.6 in (116 mm) of rain. Our Patagonia Peaks route recommends Nov – Mar, so September is outside its suggested window.
How cold is El Chaltén in September?
Average highs are 41°F (5°C) and average lows 32°F (0°C), making it the 5th-coldest month by daytime highs, with nights below freezing on average.
Does it rain a lot in El Chaltén in September?
Some: about 4.6 in (116 mm) of rain falls across September on average, the driest month of the year. The annual total is about 67.4 in (1711 mm).
What should I pack for El Chaltén in September?
Bring insulated jacket (highs only 41°F), hat, gloves and thermal base layers (lows around 32°F), shoes with grip (frost and ice are possible), packable rain jacket or umbrella (about 4.6 in of rain) and windproof shell (average wind 12 mph).
More on El Chaltén
Planning El Chaltén in September?
Share this September plan with your group, poll everyone on dates and keep the packing list in one place.