San Martín de los Andes weather in March
March in San Martín de los Andes: nice, a little rain, with clean air — not the best time to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#9 of 12 months in San Martín de los Andes · #1407 of 1413 destinations to visit in March · comfort 19/100 (tier F)
- Days
- 21°C
- Nights
- 10°C
- Wet days
- 7
- Sun
- 10.6 h
- Humidity
- 72%
- Daylight
- 12 h

Traveller notes on San Martín de los Andes in March
Notes from nearby Pucón (110 km away)
San Martín de los Andes doesn't have its own notes for March yet — these are about Pucón, close enough to share the season.
Pucon-forum threads on a March visit describe this as genuinely comfortable shoulder season, posters naming easy hotel availability as a real advantage over the busier January-February peak. Regulars call a Puerto Varas to Pucon itinerary a real standard route, several posters naming ten days as enough time to combine both areas without rushing. Posters call March weather genuinely still warm enough for lake activities, several regulars naming this a real reason to visit after peak crowds thin out. Regulars call the volcano and surrounding hikes still genuinely accessible in March, several threads naming this a real advantage over visiting later once conditions turn colder. Posters recommend booking accommodation with more flexibility than during peak summer, several regulars calling this standard given how much easier March availability is. The record: 21C days, 13.1C nights, 132.3mm across 10 days and 77 percent humidity.
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.
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.
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.
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.
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San Martín de los Andes climate normals — March
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in San Martín de los Andes in March
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.
BusySummer holidays in Argentina, school holidays in 2 of the markets that fill it(estimated)
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.
Best weatherFair weatherToughest weather
What's on in San Martín de los Andes in March
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Trail and Lanin season
15 Nov – 15 Apr · usuallyTrail seasonThe high routes in Lanin national park open once the snow goes, and the volcano itself is climbed in these months with registration at the park office. Refuges and campsites run to the same window.
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?
San Martín de los Andes in March — FAQ
- Is March a good time to visit San Martín de los Andes?
- March in San Martín de los Andes: nice, a little rain, with clean air — not the best time to visit. It ranks #9 of 12 months for San Martín de los Andes on SeasonMap's comfort score (19/100).
- What is the weather like in San Martín de los Andes in March?
- In March, San Martín de los Andes averages a daily high of 20.5°C and a low of 10°C, with about 45.8 mm of rain over roughly 6.9 rainy days.
- What is the air quality in San Martín de los Andes in March?
- San Martín de los Andes has a mean US Air Quality Index of about 19 in March.
- Does it snow in San Martín de los Andes in March?
- San Martín de los Andes sees roughly 1.5 cm of snowfall in March.
Within 300 km: San Carlos de Bariloche's Trout fishing season around 1 Nov – 1 May.