argentina tierra del fuego view h and t
Tierra del Fuego

Best Time to Visit Argentina

Because Argentina is so vast, with diverse landscapes spanning several climate zones, combining more than one region in a single trip often means you experience a wide range of weather conditions. Argentina’s climate varies from subtropical in the north (Iguazú Falls) to subpolar in the south (Tierra del Fuego).

Much of central Argentina, including Buenos Aires, has a temperate climate with hot, humid summers and cool, dry winters. In the far northwest, it becomes more arid, with summer temperatures soaring to 40°C, while Mendoza has more of a Mediterranean climate, conducive to its vineyards (the grape harvest usually takes place in March). The summer months are the best times to travel to Patagonia and Tierra del Fuego for hiking and sightseeing.

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When is the best time to visit Iguazú Falls?

The climate at Iguazú Falls is warm and humid year round. Peak water flow occurs during the hot, rainy summer months (December-February), when the falls are at their most impressive but there’s a chance some trails may be closed.

March-April and August-September see comfortable temperatures and less humidity, whilst the falls still have a good volume of water cascading through.

You’re likely to find blue skies, fewer visitors and the most agreeable temperatures from May-July or October-November, but these periods can also coincide with low flow conditions – so you may not see the falls at their most spectacular.

argentina iguasu falls and tour boat istk

Argentina in spring (September – November)

Located in the Southern Hemisphere, the seasons in Argentina are opposite to those in the Northern Hemisphere. Falling roughly between September and November, spring offers pleasant weather across much of the country – although you should still expect cold, unpredictable weather and storms to sweep Patagonia and the far south during this time. In Buenos Aires, however, daily springtime highs of around 18-24oC are the norm and it’s a pleasant time for city sightseeing.

Argentina in summer (December – February)

Summer can be hot and sticky in Buenos Aires and other lowland areas in the north of Argentina, but it’s prime time for heading south to explore the wilds of Patagonia and Tierra del Fuego. The days are long and the weather is at its most stable – perfect for hiking in the foothills of the Andes, taking a boat trip in the Lake District or taking a wildlife cruise along the Beagle Channel. Summer daytime highs in Ushuaia can reach 14-15oC – but you should come prepared for all weathers!

Argentina in autumn (March – May)

Although the weather may be more variable than summer, Patagonia and Tierra del Fuego are still accessible – with glorious red and orange hues burnishing the steppes and forests. Temperatures become more pleasant in Buenos Aires during autumn, dropping to around 18-20oC. The grape harvest during autumn is a perfect time to visit Mendoza and Argentina’s other wine regions.

Argentina in winter (June – August)

Patagonia and Tierra del Fuego become difficult to visit during winter, with freezing temperatures, severe storms and many facilities shutting down for the season – but if you’re into winter sports, June-August is the time to head for the Andean ski resorts. Temperatures are pleasant in Buenos Aires (reaching up to 14-16oC), while July and August are often the driest months for visiting Iguazú Falls – just don’t expect the water levels to be at their highest.