Argentina Weather & Climate: Monthly Averages

The climate in Argentina is remarkably diverse. The country stretches from north to south over a length of no less than 3,700 kilometers (2,299 miles). This is the same distance as between Stockholm in Sweden and Seville in Spain. Additionally, vast differences in location relative to the equator, elevation changes, and landscape variations mean that Argentina has multiple climate zones.

The Andean and southern Patagonian regions have temperate climates with highland conditions at the highest peaks, including areas with perpetual snow. The east has a mix of climates, with the north being subtropical, experiencing dry winters and wet summers (December to March). However, most parts of Argentina have relatively dry desert and steppe climates.

Rainfall

The southwest and west of the country are dry, with average precipitation amounts ranging from 200 mm (7.9 in) to 400 mm (16 in) per year. In the south and in the Andes mountains, this can fall as snow. Tierra del Fuego, in the extreme south, has a distinctly wetter character with an average of 400 mm (16 in) to 800 mm (31 in) of precipitation per year, as does the extreme west of Patagonia.

As you head northeast from central Argentina, precipitation amounts increase significantly. The subtropical northeast, along the border with Brazil, receives nearly 2000 mm (79 in) of rainfall annually. This is much wetter than the rest of the country. These precipitation levels, combined with higher temperatures, create a lush landscape.

Not only do precipitation amounts vary greatly in Argentina, but the distribution of rainfall per month can also differ considerably from region to region. In the northwest, the winter months are almost completely dry, with rain occurring only a few days. However, in summer, large amounts of rain fall, with January and February being the wettest months. The dry areas of central Argentina experience a more consistent distribution of rainfall throughout the year.

Temperatures

The Andes and Patagonia are generally cool in summer and very cold in winter, with temperatures varying by altitude. Extreme temperature shifts within a single day are common here. Keep in mind that seasons in Argentina are reversed compared to the Northern Hemisphere, meaning summer occurs from December to February. The temperature difference between seasons becomes more pronounced the further south you go.

During the day, temperatures in January vary from cool in Los Glaciares National Park at 9°C (48°F) to very warm in Santiago del Estero at 34°C (93°F). At night, temperatures drop to 21°C (70°F) in Santiago del Estero and 3°C (37°F) in Los Glaciares National Park. January is typically the hottest month of the year in Argentina.

The average maximum daytime temperatures in July range from very cold in Los Penitentes at -7°C (19°F) to warm in Tartagal at 23°C (73°F). Nighttime temperatures generally drop to 9°C (48°F) in Tartagal and -12°C (10°F) in Los Penitentes. July is considered the coldest month of the year. However, even during this period, there are places in Argentina with moderate temperatures, ensuring a pleasant experience year-round.

Wind Patterns

Argentina experiences a unique wind phenomenon known as the Zonda wind. This hot, dry wind descends from the Andes mountains, primarily affecting the western and central parts of the country. The Zonda can cause rapid temperature increases of up to 20°C (68°F) in a matter of hours, significantly impacting local weather conditions and sometimes causing damage to agriculture.

Conclusion

It is virtually impossible to pinpoint one travel period as the best time to visit Argentina. This South American country is so enormously diverse in terms of weather and climate that the ideal travel times vary by region. Most travelers choose December through March as the preferred period to visit Argentina. Since November is also great in many places within the country, we would suggest November through March as the best travel time for Argentina.

For more detailed information on what to expect each month, please visit our month-specific pages.