San Martín de los Andes weather in May

May in San Martín de los Andes: cold, rainy, with clean air — a fair time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

San Martín de los Andes🇦🇷 Argentina · Andean Lakes District · Ski57
  1. 15Jan
  2. 12Feb
  3. 19Mar
  4. 36Apr
  5. 57May
  6. 75Jun
  7. 79Jul
  8. 81Aug
  9. 67Sep
  10. 50Oct
  11. 27Nov
  12. 17Dec

#5 of 12 months in San Martín de los Andes · #1214 of 1413 destinations to visit in May · comfort 57/100 (tier D)

Days
11°C
Nights
5°C
Wet days
12
Sun
7 h
Humidity
87%
Daylight
10 h
San Martín de los Andes, Argentina
Photo: Ton Souza · Pexels

Traveller notes on San Martín de los Andes in May

Notes from nearby San Carlos de Bariloche (110 km away)

San Martín de los Andes doesn't have its own notes for May yet — these are about San Carlos de Bariloche, close enough to share the season.

Bariloche-forum threads on a May visit describe autumn color as genuinely fantastic, posters naming this a real highlight even though no snow has arrived yet. Regulars call weather genuinely rainy and unstable this time of year, several posters naming this the standard tradeoff for catching peak fall foliage. Posters call the first two weeks of May genuinely the safer bet for color specifically, several regulars naming this window before both crowds and prices drop further later in the month. Regulars call fewer tours and activities genuinely running by May, several threads naming a restricted schedule as standard once peak summer season winds down. Posters recommend real flexible plans around unstable May weather, several regulars calling this standard given how quickly conditions can shift day to day. The record: 10.8C days, 1.2C nights, 94.5mm across over 12 days and 87 percent humidity.
BarilocheMayRegular · May · 1 month ago · about San Carlos de Bariloche · Read more on Tripadvisor ↗

Other months in San Martín de los Andes

Regulars are specific late June counts as a better bet than May if you actually want snow on the ground, with real snowfall episodes already landing by early-to-mid June and roughly 7 snow days typical for the month. Our row backs that cold, genuinely wet read, 7.2C reading as a freezing 4C, over 2.5C nights feeling -1C, with a substantial 207.1mm of precipitation across 16.6 days and 100.4cm of snowfall. Regulars are consistent this counts as the quieter lead-in to the July-August winter-holiday peak, shorter daylight hours and harsher weather but genuinely fewer crowds than the school-holiday rush that follows. The record: 5.9 hours of sun, humidity 88.3 percent and AQI 24.
LateJuneBetterBetForSnowThanMay · June · 1 month ago · Read more on tripadvisor.com.ar ↗
July is high season at Chapelco and the month the Argentina forum names first, though it adds that August skis just as well for better rates. The risk sits earlier: regulars say planning a ski trip before late July or early August has been genuinely risky, and that from mid to late August you start getting spring conditions - so July is the narrow middle. The snow itself they describe as good but inclined to ice, with little powder, and the base higher than you might expect thanks to the cable car. The views over Lacar and the Lanin volcano are the compensation. The record: 6.7C days that feel like 4C, 1.7C nights, 102.4cm of snow, 15.2 precipitation days and 6.4 hours of sun.
TheNarrowMiddle · July · 1 month ago · Read more on Tripadvisor ↗
Patagonia forum threads confirm February sits squarely in the Southern Hemisphere summer season here, and it's genuinely one of the busiest months as vacationers fill the town before things quiet down again outside peak season. San Martín de los Andes was described by regulars as generally having somewhat better, more settled weather than nearby Bariloche, with a lower chance of rain than in the surrounding months. The overall read from posters familiar with the area: this is prime lake-district hiking and outdoor season, worth booking ahead given how popular the window is.
PatagoniaLakeDistrictRegular · February · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe August as full winter in San Martín de los Andes, cold overall but with skiing just as good as July and often better hotel rates. Posters flag late snowfall as a real possibility even into August and September, a genuine bonus for skiers rather than a downside. Posters are consistent that on a clear, sunny winter day conditions are really nice for short walks, with the Seven Lakes circuit nearby offering plenty of scenic options between ski days. Posters generally recommend coming prepared for cold temperatures and unpredictable weather regardless of the forecast, while still rating August a viable, budget-friendlier alternative to peak-July skiing here.
Tripadvisor community · August · 1 month ago · Read more on Tripadvisor ↗

Add your own note from San Martín de los Andes's card on the map.

San Martín de los Andes climate normals — May

Daytime high11°C / 51°F🧥 cold
Nighttime low5°C / 40°F
Feels like (high)8°C / 46°F
Rainfall111 mm / 4.4 in🌧 rainy
Rainy days12 days
Humidity87%💦 very humid
Dew point5°C / 41°F
Sunshine7 h/day
Daylight9.9 h
Wind12 km/h / 7 mph
Snowfall33.8 cm / 13.3 in
Air quality (US AQI)22🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in San Martín de los Andes in May

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Shoulder seasonan ordinary month(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for San Martín de los Andes's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherSan Martín de los Andes's weather peaks June–August.

JFMAMJJASOND

Best weatherFair weatherToughest weather

What's on in San Martín de los Andes in May

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Nature

    Lenga and nire turning

    1 Apr – 15 May · usuallyAutumn colour

    The beech on the Siete Lagos road goes yellow and red for about six weeks, with the lakes still flat and the town emptied out. The best of it is between Lacar and Villa La Angostura.

  • Season

    Snow season

    Ski season

    About 34 cm of snow falls in the month.

    from the climate normals

What's on around the world in May →

Nearby, and something's on

Within 300 km of San Martín de los Andes — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is San Martín de los Andes?

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San Martín de los Andes in May — FAQ

Is May a good time to visit San Martín de los Andes?
May in San Martín de los Andes: cold, rainy, with clean air — a fair time to visit. It ranks #5 of 12 months for San Martín de los Andes on SeasonMap's comfort score (57/100).
What is the weather like in San Martín de los Andes in May?
In May, San Martín de los Andes averages a daily high of 10.7°C and a low of 4.5°C, with about 110.5 mm of rain over roughly 12.1 rainy days.
What is the air quality in San Martín de los Andes in May?
San Martín de los Andes has a mean US Air Quality Index of about 22 in May.
Does it snow in San Martín de los Andes in May?
San Martín de los Andes sees roughly 33.8 cm of snowfall in May.

Within 300 km: San Carlos de Bariloche's Lenga forests turning around 1 Apr – 10 May.