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Best Time to Visit Argentina

March to May and September to November for Buenos Aires; November to March for Patagonia and Ushuaia; April to September is more comfortable for Iguazu Falls

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Quick Answer

Best Overall

March to May and September to November for Buenos Aires; November to March for Patagonia and Ushuaia; April to September is more comfortable for Iguazu Falls

Peak Season

December–February (Argentine summer — Patagonia's main trekking season, Buenos Aires at its hottest and most humid)

Shoulder Season

March–May, September–November

Cheapest Period

June–August (Argentine winter — low season nationwide outside Andean ski resorts)

Weather Varies By Region

Argentina is large enough that no single "best time" applies everywhere. Here's how the timing changes region by region.

Buenos Aires & the Pampas

Mar–May, Sep–Nov

The capital is hot and humid in January-February (near 30°C) and cool in June-August (highs around 16°C); spring and autumn are the most comfortable for walking the city.

Patagonia (El Calafate, Bariloche, Torres del Paine access)

Nov–Mar

Glacier excursions and trekking trails run primarily November through March; many services scale back or close entirely in the depths of winter (June–August), when snow and strong winds make trekking difficult.

Iguazu Falls (subtropical north)

Apr–Sep (more comfortable), year-round otherwise

Warm year-round with heavy rainfall (nearly 2,000mm annually); the falls are fullest during the wetter November-March season, but April-September is more comfortable for the surrounding rainforest trails.

Mendoza Wine Region

Feb–Apr (harvest season)

Semi-desert climate near the Andes with minimal rainfall year-round; the grape harvest (vendimia) runs February through April, making autumn a signature time to visit.

Ushuaia & Tierra del Fuego

Nov–Mar

The world's southernmost city has a subpolar climate — June and July average just 2°C — and most cruise and trekking operators run their season November through March.

Month-by-Month Weather

Catalog Data· Climate normals, see sources below(Verified taxonomy records from the TravelGuidesFinder destination catalog.)

Average high/low temperatures and rainfall for Buenos Aires (used here as a representative reference point — see regional notes above for other areas).

Month	High	Low	Rainfall	Season
January	30°C / 86°F	20°C / 68°F	135mm	Peak
February	29°C / 84°F	19°C / 66°F	130mm	Peak
March	27°C / 81°F	18°C / 64°F	120mm	Shoulder
April	23°C / 73°F	14°C / 57°F	130mm	Shoulder
May	19°C / 66°F	11°C / 52°F	95mm	Shoulder
June	16°C / 61°F	8°C / 46°F	60mm	Low
July	16°C / 61°F	8°C / 46°F	75mm	Low
August	18°C / 64°F	9°C / 48°F	70mm	Low
September	20°C / 68°F	11°C / 52°F	80mm	Shoulder
October	23°C / 73°F	13°C / 55°F	125mm	Shoulder
November	26°C / 79°F	16°C / 61°F	120mm	Shoulder
December	29°C / 84°F	19°C / 66°F	125mm	Peak

Season-by-Season Guide

Summer (Dec–Feb)

Hot and humid in Buenos Aires (29-30°C highs), Patagonia's warmest and busiest trekking window, Ushuaia at its mildest

Crowds: Very HighPrices: Very High

Good For

Patagonia glacier trekking (Perito Moreno, Torres del Paine)Ushuaia and Tierra del Fuego cruisesBuenos Aires tango and city sightseeing

Best weather window for Patagonia and Ushuaia

Buenos Aires is hot, humid and at its most crowded

Autumn (Mar–May)

Cooling steadily in Buenos Aires (27°C down to 19°C highs), Mendoza's grape harvest underway

Crowds: ModeratePrices: Moderate

Good For

Mendoza wine harvest (vendimia) toursBuenos Aires city sightseeing in milder weatherIguazu Falls with thinning crowds

Comfortable citywide temperatures, wine harvest season

Patagonia's trekking season is winding down by May

Winter (Jun–Aug)

Cool in Buenos Aires (16°C highs), cold with snow and high winds in Patagonia, near-freezing in Ushuaia

Crowds: LowPrices: Low

Good For

Andean skiing (Bariloche, Las Leñas)Buenos Aires museums and tango showsIguazu Falls without the summer heat and humidity

Lowest prices and crowds nationwide outside ski resorts

Most Patagonia trekking and cruise operators scale back or close

Spring (Sep–Nov)

Warming from 20°C to 26°C highs in Buenos Aires, Patagonia's trekking season reopening

Crowds: ModeratePrices: Moderate

Good For

Buenos Aires city break before summer heatEarly Patagonia trekking (November)Iguazu Falls at swollen, powerful flow

A good compromise across most regions

Patagonia services are only ramping back up early in this window

Best Time to Visit For...

Patagonia trekking & glaciers

November–March

Trails, glacier walks and most tour operators run on this Southern Hemisphere summer season.

Mendoza wine harvest

February–April

The vendimia grape harvest makes autumn a signature time to visit the wine region.

Iguazu Falls

April–September for comfort, year-round for flow

Subtropical and warm year-round; the shoulder months avoid the heaviest heat and humidity of the wet season.

Buenos Aires city break

March–May, September–November

Avoids both the summer humidity and the winter chill.

Ushuaia & Antarctica gateway cruises

November–March

The Antarctic cruise season from Ushuaia runs on this same summer window.

Cheapest Time to Visit

June to August (Argentine winter) is broadly the cheapest window nationwide, except in Andean ski towns like Bariloche, which see their own high season during these same months.

Busiest Time to Visit

December–February is the busiest and most expensive stretch, as it's the only window when Buenos Aires, Patagonia, Ushuaia and the wine harvest are all simultaneously in season — book Patagonia lodges and El Calafate glacier tours well ahead for this period.

Weather vs. Price Trade-off

March-April and September-November offer the most reasonable compromise for a multi-region trip — Buenos Aires is comfortable, Mendoza's harvest is either underway or approaching, and Patagonia's season is open or just opening.

How to Get There

Ministro Pistarini International (EZE) in Buenos Aires is the main international gateway; El Calafate (FTE), Ushuaia (USH), Iguazu (IGR) and Mendoza (MDZ) are reached by domestic flights from Buenos Aires.

How Long to Stay

10-14 days allows Buenos Aires plus one other region (Patagonia or Iguazu). Three weeks or more is realistic to combine Patagonia, Iguazu and Mendoza given Argentina's size and internal flight distances.

Sample Itineraries

3 Days

in Argentina

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5 Days

in Argentina

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7 Days

in Argentina

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What to Pack, By Season

Pack for Buenos Aires in spring/autumn

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Pack for Patagonia trekking

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Pack for Iguazu Falls

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Frequently Asked Questions

What is the best time to visit Argentina?

It depends on the region — November to March is best for Patagonia and Ushuaia (Southern Hemisphere summer), while Buenos Aires is most comfortable in March-May and September-November, outside its hot, humid summer.

When is the best time to see Iguazu Falls?

The falls run year-round, but April to September is more comfortable weather-wise; November to March brings the heaviest rain and the fullest, most powerful flow.

When is Mendoza's wine harvest?

The vendimia grape harvest runs roughly February through April, making autumn the signature time to visit Argentina's wine region.

Last verified: 2026-09-19 · Climate figures are 30-year averages and will not match any single trip exactly.

Sources:Buenos Aires & regional climate normals — Climates to Travel