January in El Chaltén — the year's strongest window
Best window · 7/10January averages 4°C (40°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Monthly rainfall reaches 104 mm — wet for this destination — but about 30 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
On our climate-comfort scale this is the top-ranked month of the year for El Chaltén at 7/10 — the reference point every other month on this page is measured against.
Plan for peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella, footwear you can get muddy.
February in El Chaltén: mixed conditions, plan around the weather
Trade-offs · 6.6/10February averages 4°C (40°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
At 107 mm this is a genuinely wet month: about 19 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 6.6/10 here, 4th of 12 months, against 7/10 in the destination's best month.
Plan for peak pricing, with this is one of the busiest months here.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella, footwear you can get muddy.
March in El Chaltén — the hardest end of the year
Hardest · 4.5/10At 2°C (35°F) this is proper winter weather in March: layer up and split the day between outdoor highlights and indoor stops.
134 mm of rain signals a properly wet month, with only about 9 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 4.5/10 on the same scale — 6th of 12 months, versus 7/10 for the best month here.
Budget for mid-season pricing, and crowds are moderate.
Pack insulated layers, a windproof shell, gloves and boots with grip, a proper rain shell rather than an umbrella, footwear you can get muddy.
If your dates are flexible, January is materially better in El Chaltén — 2.5 points higher on the same scale.
April in El Chaltén — the hardest end of the year
Hardest · 3.1/10April averages 0°C (31°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
At 110 mm of water-equivalent precipitation this is a snowy month at resort level — that is snowpack, not lost days — with about 1 days with 6+ hours of sunshine and 10.5 hours of daylight.
It scores 3.1/10 here, 8th of 12 months, against 7/10 in the destination's best month.
Figure on low-season pricing, with crowds are light for this destination.
Pack insulated layers, a windproof shell, gloves and boots with grip, a proper rain shell rather than an umbrella, footwear you can get muddy.
Flexible dates? January scores 3.9 points higher here — enough to change the trip.
May in El Chaltén: expect compromises
Hardest · 2.4/10At -3°C (27°F) this is proper winter weather in May: layer up and split the day between outdoor highlights and indoor stops.
90 mm of water-equivalent precipitation makes this a snowy month at resort level; what falls stays as snow, with almost no days with 6+ hours of sunshine and 8.9 hours of daylight.
That is 2.4/10 on the same scale — 9th of 12 months, versus 7/10 for the best month here.
Expect low-season pricing, and crowds are light for this destination.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer, footwear you can get muddy.
If your dates are flexible, January is materially better in El Chaltén — 4.6 points higher on the same scale.
June in El Chaltén — off-season conditions
Hardest · 1.6/10June averages -5°C (23°F) — deep-winter cold that dictates the whole trip: short outdoor stints, indoor plans on standby, and no expectation of long walking days.
At 102 mm of water-equivalent precipitation this is a snowy month at resort level — that is snowpack, not lost days — with almost no days with 6+ hours of sunshine and 8 hours of daylight.
It scores 1.6/10 here, 11th of 12 months, against 7/10 in the destination's best month.
Figure on low-season pricing, with crowds are light for this destination.
Pack insulated layers, a windproof shell, gloves and boots with grip, a proper rain shell rather than an umbrella, footwear you can get muddy.
Flexible dates? January scores 5.4 points higher here — enough to change the trip.
July in El Chaltén — off-season conditions
Hardest · 1.5/10July averages -6°C (21°F) — deep-winter cold that dictates the whole trip: short outdoor stints, indoor plans on standby, and no expectation of long walking days.
At 119 mm of water-equivalent precipitation this is a snowy month at resort level — that is snowpack, not lost days — with almost no days with 6+ hours of sunshine and 8.4 hours of daylight.
It scores 1.5/10 here, 12th of 12 months, against 7/10 in the destination's best month.
Plan for low-season pricing, with crowds are light for this destination.
Pack insulated layers, a windproof shell, gloves and boots with grip, a proper rain shell rather than an umbrella, footwear you can get muddy.
Flexible dates? January scores 5.5 points higher here — enough to change the trip.
August in El Chaltén — the hardest end of the year
Hardest · 2.1/10At -4°C (25°F) this is proper winter weather in August: layer up and split the day between outdoor highlights and indoor stops.
104 mm of water-equivalent precipitation makes this a snowy month at resort level; what falls stays as snow, with almost no days with 6+ hours of sunshine and 9.8 hours of daylight.
That is 2.1/10 on the same scale — 10th of 12 months, versus 7/10 for the best month here.
Expect low-season pricing, and crowds are moderate.
Pack insulated layers, a windproof shell, gloves and boots with grip, a proper rain shell rather than an umbrella, footwear you can get muddy.
If your dates are flexible, January is materially better in El Chaltén — 4.9 points higher on the same scale.
September in El Chaltén — the hardest end of the year
Hardest · 3.6/10At -3°C (26°F) this is proper winter weather in September: layer up and split the day between outdoor highlights and indoor stops.
108 mm of water-equivalent precipitation makes this a snowy month at resort level; what falls stays as snow, with about 7 days with 6+ hours of sunshine and 11.7 hours of daylight.
That is 3.6/10 on the same scale — 7th of 12 months, versus 7/10 for the best month here.
Budget for low-season pricing, and crowds are light for this destination.
Pack insulated layers, a windproof shell, gloves and boots with grip, a proper rain shell rather than an umbrella, footwear you can get muddy.
If your dates are flexible, January is materially better in El Chaltén — 3.4 points higher on the same scale.
October in El Chaltén — middling scores, decent value
Trade-offs · 5.7/10October averages 0°C (32°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
At 111 mm of water-equivalent precipitation this is a snowy month at resort level — that is snowpack, not lost days — with about 18 days with 6+ hours of sunshine and 13.5 hours of daylight.
It scores 5.7/10 here, 5th of 12 months, against 7/10 in the destination's best month.
Figure on mid-season pricing, with crowds are moderate.
Pack insulated layers, a windproof shell, gloves and boots with grip, a proper rain shell rather than an umbrella, footwear you can get muddy.
November in El Chaltén — middling scores, decent value
Trade-offs · 6.7/10November averages 2°C (35°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
Rainfall runs 92 mm, so plan one flexible day in three; you still get about 25 days with 6+ hours of sunshine and 15.2 hours of daylight.
It scores 6.7/10 here, 3rd of 12 months, against 7/10 in the destination's best month.
Plan for peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer, footwear you can get muddy.
December in El Chaltén: mixed conditions, plan around the weather
Trade-offs · 6.9/10At 3°C (37°F) this is proper winter weather in December: layer up and split the day between outdoor highlights and indoor stops.
Budget for roughly 95 mm of rain this month — a flexible day or two helps — with about 31 days with 6+ hours of sunshine and 16 hours of daylight to work around it.
That is 6.9/10 on the same scale — 2nd of 12 months, versus 7/10 for the best month here.
Budget for peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer, footwear you can get muddy.
